Vulnerability-Lookup

CVE-2026-49295 (GCVE-0-2026-49295)

Vulnerability from cvelistv5 – Published: 2026-06-19 20:09 – Updated: 2026-06-22 17:18

Title

libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPS

Summary

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. Version 1.0.20 patches the issue.

Severity

7.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-22 17:18 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/strukturag/libde265/security/a…	x_refsource_CONFIRM
https://github.com/strukturag/libde265/commit/691…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
strukturag	libde265	Affected: < 1.0.20	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-49295

Vulnerability from fkie_nvd - Published: 2026-06-19 21:17 - Updated: 2026-06-26 19:17

Severity

7.1 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/strukturag/libde265/commit/691f3a3c55b3d32478c4a49895dee061a282652b	Patch
security-advisories@github.com	https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594	Exploit, Mitigation, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594	Exploit, Mitigation, Vendor Advisory

Impacted products

	Vendor	Product	Version
	struktur	libde265	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libde265",
          "vendor": "strukturag",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.20"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
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              "matchCriteriaId": "DFAFB5DC-69ED-439B-8046-9F12CA49D5AE",
              "versionEndExcluding": "1.0.20",
              "vulnerable": true
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    {
      "lang": "en",
      "value": "libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. Version 1.0.20 patches the issue."
    }
  ],
  "id": "CVE-2026-49295",
  "lastModified": "2026-06-26T19:17:19.260",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
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ubuntu-cve-2026-49295

Vulnerability from osv_ubuntu

Published

2026-06-19 21:17

Modified

2026-07-21 10:43

Summary

Details

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in decoder_context::process_reference_picture_set() (libde265/decctx.cc:1376). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry PocStFoll array, writing at index 16. Version 1.0.20 patches the issue.

Severity

7.1 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-49295	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-49295	REPORT
	https://github.com/strukturag/libde265/security/a…	REPORT
	https://ubuntu.com/security/notices/USN-8573-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm6"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.2-2ubuntu0.16.04.1~esm6?arch=source\u0026distro=esm-apps-legacy/xenial"
      },
      "ranges": [
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            },
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2-1build1",
        "1.0.2-2",
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        "1.0.2-2ubuntu0.16.04.1~esm2",
        "1.0.2-2ubuntu0.16.04.1~esm3",
        "1.0.2-2ubuntu0.16.04.1~esm4",
        "1.0.2-2ubuntu0.16.04.1~esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.2-2ubuntu0.18.04.1~esm6"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.2-2ubuntu0.18.04.1~esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.2-2ubuntu0.18.04.1~esm6?arch=source\u0026distro=esm-apps/bionic"
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2-2build1",
        "1.0.2-2ubuntu0.18.04.1~esm1",
        "1.0.2-2ubuntu0.18.04.1~esm2",
        "1.0.2-2ubuntu0.18.04.1~esm3",
        "1.0.2-2ubuntu0.18.04.1~esm4",
        "1.0.2-2ubuntu0.18.04.1~esm5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.4-1ubuntu0.4+esm2"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.4-1ubuntu0.4+esm2"
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.4-1ubuntu0.4+esm2?arch=source\u0026distro=esm-apps/focal"
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      "ranges": [
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      "versions": [
        "1.0.3-1build1",
        "1.0.4-1",
        "1.0.4-1build1",
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        "1.0.4-1ubuntu0.2",
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            "binary_version": "1.0.8-1ubuntu0.3+esm2"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.8-1ubuntu0.3+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.8-1ubuntu0.3+esm2?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.8-1ubuntu0.3+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-1",
        "1.0.8-1ubuntu0.1",
        "1.0.8-1ubuntu0.2",
        "1.0.8-1ubuntu0.3",
        "1.0.8-1ubuntu0.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.15-1ubuntu0.1"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.15-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.15-1ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.15-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.12-2",
        "1.0.13-1",
        "1.0.15-1",
        "1.0.15-1build1",
        "1.0.15-1build2",
        "1.0.15-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.16-1"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.16-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.16-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.15-1build5",
        "1.0.16-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libde265-0",
            "binary_version": "1.0.16-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.16-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "libde265",
        "purl": "pkg:deb/ubuntu/libde265@1.0.16-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.16-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.16-1",
        "1.0.16-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. Version 1.0.20 patches the issue.",
  "id": "UBUNTU-CVE-2026-49295",
  "modified": "2026-07-21T10:43:28Z",
  "published": "2026-06-19T21:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-49295"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-49295"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libde265/security/advisories/GHSA-g2rg-wj66-w594"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8573-1"
    }
  ],
  "related": [
    "USN-8573-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-49295"
  ]
}

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

CVE-2026-49295 (GCVE-0-2026-49295)

FKIE_CVE-2026-49295

ubuntu-cve-2026-49295

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour