Vulnerability-Lookup

UBUNTU-CVE-2026-66038 (CVE-2026-66038)

Vulnerability from osv_ubuntu – Published: 2026-07-24 20:18 – Updated: 2026-09-09 22:36 – Source website

Details

FFmpeg through 8.1.2, fixed in commit 8670835, contains an information disclosure vulnerability in the LCL/ZLIB video decoder that allows attackers to expose uninitialized heap memory by supplying a valid zlib stream that inflates to fewer bytes than the expected frame size. The zlib_decomp() function in lcldec.c treats short decompression as non-fatal and continues to the RGB24 conversion path, which copies a full frame's worth of rows from the allocation buffer using original frame dimensions, causing uninitialized heap contents including pointer-derived allocator bytes to be copied into the attacker-observable AVFrame output and potentially defeating ASLR in long-lived media processing services.

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

7.1 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-66038	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-66038	REPORT
	https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23626	REPORT
	https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/e7cb…	REPORT
	https://www.vulncheck.com/advisories/ffmpeg-lcl-z…	REPORT
	https://ubuntu.com/security/notices/USN-8671-1	ADVISORY
	https://ubuntu.com/security/notices/USN-8738-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libav-tools",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavcodec-extra-54",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavcodec54",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavdevice-extra-53",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavdevice53",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavfilter-extra-3",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavfilter3",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavformat-extra-54",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavformat54",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavresample1",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavutil-extra-52",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libavutil52",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libswscale-extra-2",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          },
          {
            "binary_name": "libswscale2",
            "binary_version": "6:9.20-0ubuntu0.14.04.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libav",
        "purl": "pkg:deb/ubuntu/libav@6:9.20-0ubuntu0.14.04.1+esm1?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6:0.8.7-1ubuntu2",
        "6:9.10-1ubuntu1",
        "6:9.10-1ubuntu2",
        "6:9.10-1ubuntu5",
        "6:9.10-1ubuntu6",
        "6:9.10-1ubuntu7",
        "6:9.11-2ubuntu1",
        "6:9.11-2ubuntu2",
        "6:9.13-0ubuntu0.14.04.1",
        "6:9.14-0ubuntu0.14.04.1",
        "6:9.16-0ubuntu0.14.04.1",
        "6:9.18-0ubuntu0.14.04.1",
        "6:9.20-0ubuntu0.14.04.1",
        "6:9.20-0ubuntu0.14.04.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libav-tools",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavcodec-ffmpeg-extra56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavcodec-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavdevice-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavfilter-ffmpeg5",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavformat-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavresample-ffmpeg2",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavutil-ffmpeg54",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libpostproc-ffmpeg53",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libswresample-ffmpeg1",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libswscale-ffmpeg3",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:2.8.17-0ubuntu0.1+esm15?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7:2.8.17-0ubuntu0.1+esm15"
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7:2.7.2-1build1",
        "7:2.8.1-1ubuntu1",
        "7:2.8.2-1ubuntu1",
        "7:2.8.3-1",
        "7:2.8.4-1",
        "7:2.8.4-1ubuntu1",
        "7:2.8.4-1ubuntu2",
        "7:2.8.4-1ubuntu3",
        "7:2.8.4-1ubuntu4",
        "7:2.8.6-1ubuntu1",
        "7:2.8.6-1ubuntu2",
        "7:2.8.8-0ubuntu0.16.04.1",
        "7:2.8.10-0ubuntu0.16.04.1",
        "7:2.8.11-0ubuntu0.16.04.1",
        "7:2.8.14-0ubuntu0.16.04.1",
        "7:2.8.15-0ubuntu0.16.04.1",
        "7:2.8.15-0ubuntu0.16.04.1+esm1",
        "7:2.8.17-0ubuntu0.1",
        "7:2.8.17-0ubuntu0.1+esm1",
        "7:2.8.17-0ubuntu0.1+esm2",
        "7:2.8.17-0ubuntu0.1+esm3",
        "7:2.8.17-0ubuntu0.1+esm4",
        "7:2.8.17-0ubuntu0.1+esm5",
        "7:2.8.17-0ubuntu0.1+esm6",
        "7:2.8.17-0ubuntu0.1+esm7",
        "7:2.8.17-0ubuntu0.1+esm8",
        "7:2.8.17-0ubuntu0.1+esm9",
        "7:2.8.17-0ubuntu0.1+esm10",
        "7:2.8.17-0ubuntu0.1+esm11",
        "7:2.8.17-0ubuntu0.1+esm12",
        "7:2.8.17-0ubuntu0.1+esm13",
        "7:2.8.17-0ubuntu0.1+esm14"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavcodec-extra57",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavcodec57",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavdevice57",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavfilter-extra",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavfilter-extra6",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavfilter6",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavformat57",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavresample3",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libavutil55",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libpostproc54",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libswresample2",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          },
          {
            "binary_name": "libswscale4",
            "binary_version": "7:3.4.11-0ubuntu0.1+esm13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:3.4.11-0ubuntu0.1+esm13?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7:3.4.11-0ubuntu0.1+esm13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7:3.3.4-2",
        "7:3.3.4-2build3",
        "7:3.4-2ubuntu2",
        "7:3.4-4",
        "7:3.4-4build1",
        "7:3.4.1-1",
        "7:3.4.1-1build1",
        "7:3.4.2-1",
        "7:3.4.2-1build1",
        "7:3.4.2-2",
        "7:3.4.4-0ubuntu0.18.04.1",
        "7:3.4.6-0ubuntu0.18.04.1",
        "7:3.4.8-0ubuntu0.2",
        "7:3.4.11-0ubuntu0.1",
        "7:3.4.11-0ubuntu0.1+esm1",
        "7:3.4.11-0ubuntu0.1+esm2",
        "7:3.4.11-0ubuntu0.1+esm3",
        "7:3.4.11-0ubuntu0.1+esm4",
        "7:3.4.11-0ubuntu0.1+esm5",
        "7:3.4.11-0ubuntu0.1+esm6",
        "7:3.4.11-0ubuntu0.1+esm7",
        "7:3.4.11-0ubuntu0.1+esm8",
        "7:3.4.11-0ubuntu0.1+esm9",
        "7:3.4.11-0ubuntu0.1+esm10",
        "7:3.4.11-0ubuntu0.1+esm11",
        "7:3.4.11-0ubuntu0.1+esm12"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavcodec-extra58",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavcodec58",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavdevice58",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavfilter-extra",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavfilter-extra7",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavfilter7",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavformat58",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavresample4",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libavutil56",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libpostproc55",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libswresample3",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          },
          {
            "binary_name": "libswscale5",
            "binary_version": "7:4.2.7-0ubuntu0.1+esm14"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:4.2.7-0ubuntu0.1+esm14?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
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            {
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      "versions": [
        "7:4.1.4-1build2",
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        "7:4.2.2-1ubuntu1",
        "7:4.2.4-1ubuntu0.1",
        "7:4.2.4-1ubuntu0.1+esm1",
        "7:4.2.7-0ubuntu0.1",
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        "7:4.2.7-0ubuntu0.1+esm2",
        "7:4.2.7-0ubuntu0.1+esm3",
        "7:4.2.7-0ubuntu0.1+esm4",
        "7:4.2.7-0ubuntu0.1+esm5",
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        "7:4.2.7-0ubuntu0.1+esm13"
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    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libavcodec-extra58",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
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          {
            "binary_name": "libavcodec58",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
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          {
            "binary_name": "libavdevice58",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
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          {
            "binary_name": "libavfilter-extra",
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          },
          {
            "binary_name": "libavfilter-extra7",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libavfilter7",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libavformat-extra",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libavformat-extra58",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libavformat58",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libavutil56",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libpostproc55",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libswresample3",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          },
          {
            "binary_name": "libswscale5",
            "binary_version": "7:4.4.2-0ubuntu0.22.04.1+esm13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:4.4.2-0ubuntu0.22.04.1+esm13?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
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            {
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            {
              "fixed": "7:4.4.2-0ubuntu0.22.04.1+esm13"
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          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "7:4.4-6ubuntu5",
        "7:4.4.1-2ubuntu1",
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        "7:4.4.1-3ubuntu3",
        "7:4.4.1-3ubuntu5",
        "7:4.4.2-0ubuntu0.22.04.1",
        "7:4.4.2-0ubuntu0.22.04.1+esm1",
        "7:4.4.2-0ubuntu0.22.04.1+esm2",
        "7:4.4.2-0ubuntu0.22.04.1+esm3",
        "7:4.4.2-0ubuntu0.22.04.1+esm4",
        "7:4.4.2-0ubuntu0.22.04.1+esm5",
        "7:4.4.2-0ubuntu0.22.04.1+esm6",
        "7:4.4.2-0ubuntu0.22.04.1+esm7",
        "7:4.4.2-0ubuntu0.22.04.1+esm8",
        "7:4.4.2-0ubuntu0.22.04.1+esm9",
        "7:4.4.2-0ubuntu0.22.04.1+esm10",
        "7:4.4.2-0ubuntu0.22.04.1+esm11",
        "7:4.4.2-0ubuntu0.22.04.1+esm12"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavcodec-extra60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavcodec60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavdevice60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavfilter-extra",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavfilter-extra9",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavfilter9",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavformat-extra",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavformat-extra60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavformat60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavutil58",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libpostproc57",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libswresample4",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libswscale7",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:6.1.1-3ubuntu5+esm11?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7:6.1.1-3ubuntu5+esm11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7:6.0-6ubuntu1",
        "7:6.0-9ubuntu1",
        "7:6.1-2ubuntu1",
        "7:6.1-3ubuntu1",
        "7:6.1-4ubuntu1",
        "7:6.1-5ubuntu1",
        "7:6.1.1-1ubuntu1",
        "7:6.1.1-3ubuntu1",
        "7:6.1.1-3ubuntu5",
        "7:6.1.1-3ubuntu5+esm1",
        "7:6.1.1-3ubuntu5+esm2",
        "7:6.1.1-3ubuntu5+esm3",
        "7:6.1.1-3ubuntu5+esm4",
        "7:6.1.1-3ubuntu5+esm5",
        "7:6.1.1-3ubuntu5+esm6",
        "7:6.1.1-3ubuntu5+esm7",
        "7:6.1.1-3ubuntu5+esm8",
        "7:6.1.1-3ubuntu5+esm10"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavcodec-extra62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavcodec62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavdevice62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavfilter-extra",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavfilter-extra11",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavfilter11",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavformat-extra",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavformat-extra62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavformat62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavutil60",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libswresample6",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libswscale9",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:8.0.1-3ubuntu2+esm3?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7:8.0.1-3ubuntu2+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7:7.1.1-1ubuntu4",
        "7:7.1.2-1ubuntu3",
        "7:7.1.2-1ubuntu4",
        "7:7.1.3-1ubuntu1",
        "7:8.0.1-2ubuntu1",
        "7:8.0.1-3ubuntu1",
        "7:8.0.1-3ubuntu2",
        "7:8.0.1-3ubuntu2+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "FFmpeg through 8.1.2, fixed in commit 8670835, contains an information disclosure vulnerability in the LCL/ZLIB video decoder that allows attackers to expose uninitialized heap memory by supplying a valid zlib stream that inflates to fewer bytes than the expected frame size. The zlib_decomp() function in lcldec.c treats short decompression as non-fatal and continues to the RGB24 conversion path, which copies a full frame\u0027s worth of rows from the allocation buffer using original frame dimensions, causing uninitialized heap contents including pointer-derived allocator bytes to be copied into the attacker-observable AVFrame output and potentially defeating ASLR in long-lived media processing services.",
  "id": "UBUNTU-CVE-2026-66038",
  "modified": "2026-09-09T22:36:44Z",
  "published": "2026-07-24T20:18:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-66038"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-66038"
    },
    {
      "type": "REPORT",
      "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23626"
    },
    {
      "type": "REPORT",
      "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/e7cbfd1c507b57a806a5825b87d609963e862c8c"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/ffmpeg-lcl-zlib-video-decoder-information-disclosure-via-lcldec-c"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8671-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8738-1"
    }
  ],
  "related": [
    "USN-8671-1",
    "USN-8738-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-66038"
  ]
}

CVE-2026-66038 (GCVE-0-2026-66038)

Vulnerability from cvelistv5 – Published: 2026-07-24 19:39 – Updated: 2026-07-28 01:06 X_Open Source

Title

FFmpeg LCL/ZLIB Video Decoder Information Disclosure via lcldec.c

Summary

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-24 20:14 UTC

CWE

CWE-908 - Use of Uninitialized Resource

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23626	issue-tracking
https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/e7cb…	patch
https://www.vulncheck.com/advisories/ffmpeg-lcl-z…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
FFmpeg	FFmpeg	Affected: 0 , ≤ 8.1.2 (semver) Unaffected: 86708357d126af84c16f80d9c57335d1e8c845c5 (git) cpe:2.3:a:ffmpeg:ffmpeg::::::::

Date Public

2026-07-04 00:00

Credits

Adrian Junge (vurlo)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
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            "other": {
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                "id": "CVE-2026-66038",
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      "cpeApplicability": [
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            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
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        "discovery": "UNKNOWN"
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    "datePublished": "2026-07-24T19:39:27.448Z",
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}

USN-8671-1 (UBUNTU-CVE-2026-66036)

Vulnerability from osv_ubuntu – Published: 2026-08-24 17:16 – Updated: 2026-08-24 17:16 – Source website

Summary

ffmpeg vulnerabilities

Details

Adrian Junge was discovered that FFmpeg incorrectly handled certain media files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-66036, CVE-2026-66039)

Adrian Junge discovered that FFmpeg incorrectly handled certain media files. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-66038)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8671-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-66036	REPORT
	https://ubuntu.com/security/CVE-2026-66038	REPORT
	https://ubuntu.com/security/CVE-2026-66039	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-66036",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
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                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
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                }
              ]
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              "id": "CVE-2026-66038",
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
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                {
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                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-66039",
              "severity": [
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                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
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            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
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        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libav-tools",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavcodec-ffmpeg-extra56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavcodec-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavdevice-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavfilter-ffmpeg5",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavformat-ffmpeg56",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavresample-ffmpeg2",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libavutil-ffmpeg54",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libpostproc-ffmpeg53",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libswresample-ffmpeg1",
            "binary_version": "7:2.8.17-0ubuntu0.1+esm15"
          },
          {
            "binary_name": "libswscale-ffmpeg3",
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          }
        ]
      },
      "package": {
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        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:2.8.17-0ubuntu0.1+esm15?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
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        "7:2.8.3-1",
        "7:2.8.4-1",
        "7:2.8.4-1ubuntu1",
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        "7:2.8.14-0ubuntu0.16.04.1",
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        "7:2.8.15-0ubuntu0.16.04.1+esm1",
        "7:2.8.17-0ubuntu0.1",
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      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavcodec-extra60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavcodec60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavdevice60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavfilter-extra",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavfilter-extra9",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavfilter9",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavformat-extra",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavformat-extra60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavformat60",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libavutil58",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libpostproc57",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libswresample4",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          },
          {
            "binary_name": "libswscale7",
            "binary_version": "7:6.1.1-3ubuntu5+esm11"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:6.1.1-3ubuntu5+esm11?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7:6.1.1-3ubuntu5+esm11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7:6.0-6ubuntu1",
        "7:6.0-9ubuntu1",
        "7:6.1-2ubuntu1",
        "7:6.1-3ubuntu1",
        "7:6.1-4ubuntu1",
        "7:6.1-5ubuntu1",
        "7:6.1.1-1ubuntu1",
        "7:6.1.1-3ubuntu1",
        "7:6.1.1-3ubuntu5",
        "7:6.1.1-3ubuntu5+esm1",
        "7:6.1.1-3ubuntu5+esm2",
        "7:6.1.1-3ubuntu5+esm3",
        "7:6.1.1-3ubuntu5+esm4",
        "7:6.1.1-3ubuntu5+esm5",
        "7:6.1.1-3ubuntu5+esm6",
        "7:6.1.1-3ubuntu5+esm7",
        "7:6.1.1-3ubuntu5+esm8",
        "7:6.1.1-3ubuntu5+esm10"
      ]
    }
  ],
  "aliases": [],
  "details": "Adrian Junge was discovered that FFmpeg incorrectly handled certain media\nfiles. An attacker could possibly use this issue to cause a denial of\nservice or execute arbitrary code. (CVE-2026-66036, CVE-2026-66039)\n\nAdrian Junge discovered that FFmpeg incorrectly handled certain media\nfiles. An attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2026-66038)",
  "id": "USN-8671-1",
  "modified": "2026-08-24T17:16:26Z",
  "published": "2026-08-24T17:16:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8671-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-66036"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-66038"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-66039"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "ffmpeg vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-66036",
    "UBUNTU-CVE-2026-66038",
    "UBUNTU-CVE-2026-66039"
  ]
}

USN-8738-1 (UBUNTU-CVE-2026-66036)

Vulnerability from osv_ubuntu – Published: 2026-09-08 17:01 – Updated: 2026-09-09 22:06 – Source website

Summary

ffmpeg vulnerabilities

Details

It was discovered that FFmpeg incorrectly handled certain video frames when using the hqdn3d filter. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-66036)

Adrian Junge discovered that FFmpeg incorrectly handled certain compressed video files. An attacker could possibly use this issue to expose sensitive information. (CVE-2026-66038)

Adrian Junge discovered that FFmpeg incorrectly handled certain audio files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-66039)

Adrian Junge discovered that FFmpeg incorrectly handled certain subtitle files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-70628)

Adrian Junge discovered that FFmpeg incorrectly handled certain video files. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-70632)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8738-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-66036	REPORT
	https://ubuntu.com/security/CVE-2026-66038	REPORT
	https://ubuntu.com/security/CVE-2026-66039	REPORT
	https://ubuntu.com/security/CVE-2026-70628	REPORT
	https://ubuntu.com/security/CVE-2026-70632	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-66036",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-66038",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-66039",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-70628",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-70632",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ffmpeg",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavcodec-extra",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavcodec-extra62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavcodec62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavdevice62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavfilter-extra",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavfilter-extra11",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavfilter11",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavformat-extra",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavformat-extra62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavformat62",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libavutil60",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libswresample6",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          },
          {
            "binary_name": "libswscale9",
            "binary_version": "7:8.0.1-3ubuntu2+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "ffmpeg",
        "purl": "pkg:deb/ubuntu/ffmpeg@7:8.0.1-3ubuntu2+esm3?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7:8.0.1-3ubuntu2+esm3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7:7.1.1-1ubuntu4",
        "7:7.1.2-1ubuntu3",
        "7:7.1.2-1ubuntu4",
        "7:7.1.3-1ubuntu1",
        "7:8.0.1-2ubuntu1",
        "7:8.0.1-3ubuntu1",
        "7:8.0.1-3ubuntu2",
        "7:8.0.1-3ubuntu2+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that FFmpeg incorrectly handled certain video frames\nwhen using the hqdn3d filter. An attacker could possibly use this issue\nto cause a denial of service or execute arbitrary code. (CVE-2026-66036)\n\nAdrian Junge discovered that FFmpeg incorrectly handled certain\ncompressed video files. An attacker could possibly use this issue to\nexpose sensitive information. (CVE-2026-66038)\n\nAdrian Junge discovered that FFmpeg incorrectly handled certain audio\nfiles. An attacker could possibly use this issue to cause a denial of\nservice or execute arbitrary code. (CVE-2026-66039)\n\nAdrian Junge discovered that FFmpeg incorrectly handled certain subtitle\nfiles. An attacker could possibly use this issue to cause a denial of\nservice or execute arbitrary code. (CVE-2026-70628)\n\nAdrian Junge discovered that FFmpeg incorrectly handled certain video\nfiles. An attacker could possibly use this issue to cause a denial of\nservice or execute arbitrary code. (CVE-2026-70632)",
  "id": "USN-8738-1",
  "modified": "2026-09-09T22:06:41Z",
  "published": "2026-09-08T17:01:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8738-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-66036"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-66038"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-66039"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-70628"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-70632"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "ffmpeg vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-66036",
    "UBUNTU-CVE-2026-66038",
    "UBUNTU-CVE-2026-66039",
    "UBUNTU-CVE-2026-70628",
    "UBUNTU-CVE-2026-70632"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2026-66038 (CVE-2026-66038)

CVE-2026-66038 (GCVE-0-2026-66038)

USN-8671-1 (UBUNTU-CVE-2026-66036)

USN-8738-1 (UBUNTU-CVE-2026-66036)

Tags

Sightings

Nomenclature

Related by attack behaviour