Vulnerability-Lookup

CVE-2026-63076 (GCVE-0-2026-63076)

Vulnerability from cvelistv5 – Published: 2026-08-25 13:00 – Updated: 2026-08-25 14:37

Title

Invalid Pointer Dereference in CMP Server via Crafted protectionAlg

Summary

Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parameter was not NULL and not its ASN.1 type, before treating it as a PBMParameter. A crafted message can contain a parameter of a different type, which is then dereferenced as an invalid pointer. Impact summary: A remote, unauthenticated attacker can crash an application acting as a CMP server that accepts PBM-protected messages, or a CMP client talking to a malicious or intercepted CMP server, resulting in a Denial of Service. CWE: CWE-476: NULL Pointer Dereference Description: When verifying the password-based MAC protection of a CMP message, OpenSSL library reads the protectionAlg algorithm parameter with X509_ALGOR_get0(), which returns both the parameter type and its value pointer. The value is then cast to an ASN1_STRING and treated as the expected PBMParameter after only checking that pointer is not NULL. The parameter type returned by X509_ALGOR_get0() was never consulted. This happens during protection verification, before any MAC is computed, so no knowledge of the PBM shared secret is required; the only precondition is that PBM verification is reachable. On the server side this is reached from OSSL_CMP_SRV_process_request() for any application that stands up a CMP server accepting PBM-protected messages, and on the client side from CMP response validation against a malicious or on-path (MITM) server. The reliable consequence is a denial of service; there is no memory disclosure, no controlled memory write, and no path to code execution. CMP is a specialized feature that an application must explicitly enable. FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 14:37 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

openssl mitre root

References

6 references

URL	Tags
https://openssl-library.org/news/secadv/20260825.txt	vendor-advisory
https://github.com/openssl/openssl/commit/a17cc8d…	patch
https://github.com/openssl/openssl/commit/a7af46a…	patch
https://github.com/openssl/openssl/commit/cdacfff…	patch
https://github.com/openssl/openssl/commit/a1f348c…	patch
https://github.com/openssl/openssl/commit/37882aa…	patch

Impacted products

1 product

Vendor	Product	Version	CPE status
OpenSSL	OpenSSL	Affected: 4.0.0 , < 4.0.2 (semver) Affected: 3.6.0 , < 3.6.4 (semver) Affected: 3.5.0 , < 3.5.8 (semver) Affected: 3.4.0 , < 3.4.7 (semver) Affected: 3.0.0 , < 3.0.22 (semver)	guessed

Date Public

2026-08-25 11:36

Credits

Ying Dong Bhabani Sankar Das Daniel Kubec

Show details on NVD website

JSON

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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "OpenSSL",
              "vendor": "OpenSSL",
              "versions": [
                {
                  "lessThan": "4.0.2",
                  "status": "affected",
                  "version": "4.0.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "3.6.4",
                  "status": "affected",
                  "version": "3.6.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "3.5.8",
                  "status": "affected",
                  "version": "3.5.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "3.4.7",
                  "status": "affected",
                  "version": "3.4.0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "3.0.22",
                  "status": "affected",
                  "version": "3.0.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "Ying Dong"
            },
            {
              "lang": "en",
              "type": "reporter",
              "value": "Bhabani Sankar Das"
            },
            {
              "lang": "en",
              "type": "remediation developer",
              "value": "Daniel Kubec"
            }
          ],
          "datePublic": "2026-08-25T11:36:16.000Z",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Issue summary: OpenSSL CMP password based protection verification only\u003cbr\u003echecks whether the protectionAlg parameter was not NULL and not its\u003cbr\u003eASN.1 type, before treating it as a PBMParameter. A crafted message can\u003cbr\u003econtain a parameter of a different type, which is then dereferenced as an\u003cbr\u003einvalid pointer.\u003cbr\u003e\u003cbr\u003eImpact summary: A remote, unauthenticated attacker can crash an application\u003cbr\u003eacting as a CMP server that accepts PBM-protected messages, or a CMP client\u003cbr\u003etalking to a malicious or intercepted CMP server, resulting in a Denial of\u003cbr\u003eService.\u003cbr\u003e\u003cbr\u003eCWE: CWE-476: NULL Pointer Dereference\u003cbr\u003e\u003cbr\u003eDescription: When verifying the password-based MAC protection of a CMP\u003cbr\u003emessage, OpenSSL library reads the protectionAlg algorithm parameter with\u003cbr\u003eX509_ALGOR_get0(), which returns both the parameter type and its value\u003cbr\u003epointer. The value is then cast to an ASN1_STRING and treated as the\u003cbr\u003eexpected PBMParameter after only checking that pointer is not NULL. The\u003cbr\u003eparameter type returned by X509_ALGOR_get0() was never consulted.\u003cbr\u003e\u003cbr\u003eThis happens during protection verification, before any MAC is computed, so\u003cbr\u003eno knowledge of the PBM shared secret is required; the only precondition is\u003cbr\u003ethat PBM verification is reachable. On the server side this is reached from\u003cbr\u003eOSSL_CMP_SRV_process_request() for any application that stands up a CMP\u003cbr\u003eserver accepting PBM-protected messages, and on the client side from CMP\u003cbr\u003eresponse validation against a malicious or on-path (MITM) server. The\u003cbr\u003ereliable consequence is a denial of service; there is no memory disclosure,\u003cbr\u003eno controlled memory write, and no path to code execution. CMP is a\u003cbr\u003especialized feature that an application must explicitly enable.\u003cbr\u003e\u003cbr\u003eFIPS impact: no\u003cbr\u003eAs the CMP code lives outside the FIPS module boundary, no FIPS modules\u003cbr\u003eare affected by this CVE."
                }
              ],
              "value": "Issue summary: OpenSSL CMP password based protection verification only\nchecks whether the protectionAlg parameter was not NULL and not its\nASN.1 type, before treating it as a PBMParameter. A crafted message can\ncontain a parameter of a different type, which is then dereferenced as an\ninvalid pointer.\n\nImpact summary: A remote, unauthenticated attacker can crash an application\nacting as a CMP server that accepts PBM-protected messages, or a CMP client\ntalking to a malicious or intercepted CMP server, resulting in a Denial of\nService.\n\nCWE: CWE-476: NULL Pointer Dereference\n\nDescription: When verifying the password-based MAC protection of a CMP\nmessage, OpenSSL library reads the protectionAlg algorithm parameter with\nX509_ALGOR_get0(), which returns both the parameter type and its value\npointer. The value is then cast to an ASN1_STRING and treated as the\nexpected PBMParameter after only checking that pointer is not NULL. The\nparameter type returned by X509_ALGOR_get0() was never consulted.\n\nThis happens during protection verification, before any MAC is computed, so\nno knowledge of the PBM shared secret is required; the only precondition is\nthat PBM verification is reachable. On the server side this is reached from\nOSSL_CMP_SRV_process_request() for any application that stands up a CMP\nserver accepting PBM-protected messages, and on the client side from CMP\nresponse validation against a malicious or on-path (MITM) server. The\nreliable consequence is a denial of service; there is no memory disclosure,\nno controlled memory write, and no path to code execution. CMP is a\nspecialized feature that an application must explicitly enable.\n\nFIPS impact: no\nAs the CMP code lives outside the FIPS module boundary, no FIPS modules\nare affected by this CVE."
            }
          ],
          "metrics": [
            {
              "format": "other",
              "other": {
                "content": {
                  "text": "Moderate"
                },
                "type": "https://openssl-library.org/policies/general/security-policy/"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-476",
                  "description": "CWE-476 NULL Pointer Dereference",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-25T13:00:11.218Z",
            "orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
            "shortName": "openssl"
          },
          "references": [
            {
              "name": "OpenSSL Advisory",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://openssl-library.org/news/secadv/20260825.txt"
            },
            {
              "name": "4.0.2 git commit",
              "tags": [
                "patch"
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              "url": "https://github.com/openssl/openssl/commit/a17cc8d612ecff6d94a9b7ca8b5283ddf5ff570e"
            },
            {
              "name": "3.6.4 git commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/openssl/openssl/commit/a7af46a92d0ce19a90e669ef56d2576a07924226"
            },
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              "name": "3.5.8 git commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/openssl/openssl/commit/cdacfff557389abfa9e4615abded2ec984517d6c"
            },
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              "name": "3.4.7 git commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/openssl/openssl/commit/a1f348ccb328c3afbd4ba6883f9b7c813c043259"
            },
            {
              "name": "3.0.22 git commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/openssl/openssl/commit/37882aa2e0256e1072442a8f62f7db45b995c45b"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Invalid Pointer Dereference in CMP Server via Crafted protectionAlg",
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
        "assignerShortName": "openssl",
        "cveId": "CVE-2026-63076",
        "datePublished": "2026-08-25T13:00:11.218Z",
        "dateReserved": "2026-07-15T13:10:26.188Z",
        "dateUpdated": "2026-08-25T14:37:32.193Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

OESA-2026-3857 (CVE-2026-63072)

Vulnerability from osv_openeuler – Published: 2026-09-14 16:35 – Updated: 2026-09-14 16:35 – Source website

Summary

edk2 security update

Details

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications.

Security Fix(es):

Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based on querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive can write and cleanse more bytes than that query reports, causing an 8-byte out-of-bounds heap write.

Impact summary: An attacker who supplies a crafted CMS message can trigger a deterministic 8-byte out-of-bounds heap write when the victim decrypts it with CMS_decrypt(), corrupting the heap and typically resulting in a Denial of Service.

CWE: CWE-787: Out-of-bounds Write

Description: The key-wrap OID is potentially attacker-controlled on the wire. CMS unwrapping allows both id-aesNNN-wrap-pad and id-aesNNN-wrap ciphers. An attacker can take a legitimate message and change a single OID byte to select the padded variant while leaving the message otherwise valid. Since the unwrap key is derived from the recipient's private operation (ECDH key agreement or ML-KEM decapsulation), the RFC 5649 integrity check cannot pass, and the decryption fails with integrity failure.

The write is a fixed-size (8-byte), fixed-value (zero) heap overflow immediately past the allocation, requires no special configuration, and is reachable from the public CMS_decrypt() function. The consequence is a heap corruption leading to a Denial of Service. The fix in the CMS code sizes the unwrap output buffer for the worst case so a failed unwrap cannot write past the allocation.

FIPS impact: no

As the CMS code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.(CVE-2026-63072)

Impact summary: A remote, unauthenticated attacker can crash an application acting as a CMP server that accepts PBM-protected messages, or a CMP client talking to a malicious or intercepted CMP server, resulting in a Denial of Service.

CWE: CWE-476: NULL Pointer Dereference

Description: When verifying the password-based MAC protection of a CMP message, OpenSSL library reads the protectionAlg algorithm parameter with X509_ALGOR_get0(), which returns both the parameter type and its value pointer. The value is then cast to an ASN1_STRING and treated as the expected PBMParameter after only checking that pointer is not NULL. The parameter type returned by X509_ALGOR_get0() was never consulted.

This happens during protection verification, before any MAC is computed, so no knowledge of the PBM shared secret is required; the only precondition is that PBM verification is reachable. On the server side this is reached from OSSL_CMP_SRV_process_request() for any application that stands up a CMP server accepting PBM-protected messages, and on the client side from CMP response validation against a malicious or on-path (MITM) server. The reliable consequence is a denial of service; there is no memory disclosure, no controlled memory write, and no path to code execution. CMP is a specialized feature that an application must explicitly enable.

FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.(CVE-2026-63076)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63072	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63076	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "edk2-debuginfo-202308-49.oe2403sp3.aarch64.rpm",
          "edk2-debugsource-202308-49.oe2403sp3.aarch64.rpm",
          "edk2-devel-202308-49.oe2403sp3.aarch64.rpm"
        ],
        "noarch": [
          "edk2-aarch64-202308-49.oe2403sp3.noarch.rpm",
          "edk2-help-202308-49.oe2403sp3.noarch.rpm",
          "edk2-ovmf-202308-49.oe2403sp3.noarch.rpm",
          "python3-edk2-devel-202308-49.oe2403sp3.noarch.rpm"
        ],
        "src": [
          "edk2-202308-49.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "edk2-debuginfo-202308-49.oe2403sp3.x86_64.rpm",
          "edk2-debugsource-202308-49.oe2403sp3.x86_64.rpm",
          "edk2-devel-202308-49.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "edk2",
        "purl": "pkg:rpm/openEuler/edk2\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "202308-49.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications.\r\n\r\nSecurity Fix(es):\n\nIssue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based\non querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive\ncan write and cleanse more bytes than that query reports, causing an 8-byte\nout-of-bounds heap write.\n\nImpact summary: An attacker who supplies a crafted CMS message can trigger a\ndeterministic 8-byte out-of-bounds heap write when the victim decrypts it\nwith CMS_decrypt(), corrupting the heap and typically resulting in a Denial\nof Service.\n\nCWE: CWE-787: Out-of-bounds Write\n\nDescription: The key-wrap OID is potentially attacker-controlled on the wire.\nCMS unwrapping allows both id-aesNNN-wrap-pad and id-aesNNN-wrap ciphers.\nAn attacker can take a legitimate message and change a single OID byte to\nselect the padded variant while leaving the message otherwise valid. Since\nthe unwrap key is derived from the recipient\u0026apos;s private operation (ECDH key\nagreement or ML-KEM decapsulation), the RFC 5649 integrity check cannot\npass, and the decryption fails with integrity failure.\n\nThe write is a fixed-size (8-byte), fixed-value (zero) heap overflow\nimmediately past the allocation, requires no special configuration, and is\nreachable from the public CMS_decrypt() function. The consequence is\na heap corruption leading to a Denial of Service. The fix in the CMS code\nsizes the unwrap output buffer for the worst case so a failed unwrap cannot\nwrite past the allocation.\n\nFIPS impact: no\n\nAs the CMS code lives outside the FIPS module boundary, no FIPS\nmodules are affected by this CVE.(CVE-2026-63072)\n\nIssue summary: OpenSSL CMP password based protection verification only\nchecks whether the protectionAlg parameter was not NULL and not its\nASN.1 type, before treating it as a PBMParameter. A crafted message can\ncontain a parameter of a different type, which is then dereferenced as an\ninvalid pointer.\n\nImpact summary: A remote, unauthenticated attacker can crash an application\nacting as a CMP server that accepts PBM-protected messages, or a CMP client\ntalking to a malicious or intercepted CMP server, resulting in a Denial of\nService.\n\nCWE: CWE-476: NULL Pointer Dereference\n\nDescription: When verifying the password-based MAC protection of a CMP\nmessage, OpenSSL library reads the protectionAlg algorithm parameter with\nX509_ALGOR_get0(), which returns both the parameter type and its value\npointer. The value is then cast to an ASN1_STRING and treated as the\nexpected PBMParameter after only checking that pointer is not NULL. The\nparameter type returned by X509_ALGOR_get0() was never consulted.\n\nThis happens during protection verification, before any MAC is computed, so\nno knowledge of the PBM shared secret is required; the only precondition is\nthat PBM verification is reachable. On the server side this is reached from\nOSSL_CMP_SRV_process_request() for any application that stands up a CMP\nserver accepting PBM-protected messages, and on the client side from CMP\nresponse validation against a malicious or on-path (MITM) server. The\nreliable consequence is a denial of service; there is no memory disclosure,\nno controlled memory write, and no path to code execution. CMP is a\nspecialized feature that an application must explicitly enable.\n\nFIPS impact: no\nAs the CMP code lives outside the FIPS module boundary, no FIPS modules\nare affected by this CVE.(CVE-2026-63076)",
  "id": "OESA-2026-3857",
  "modified": "2026-09-14T16:35:04Z",
  "published": "2026-09-14T16:35:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3857"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63072"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63076"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "edk2 security update",
  "upstream": [
    "CVE-2026-63072",
    "CVE-2026-63076"
  ]
}

OESA-2026-3858 (CVE-2026-63072)

Vulnerability from osv_openeuler – Published: 2026-09-14 16:35 – Updated: 2026-09-14 16:35 – Source website

Summary

edk2 security update

Details

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications.

Security Fix(es):

CWE: CWE-787: Out-of-bounds Write

FIPS impact: no

As the CMS code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.(CVE-2026-63072)

CWE: CWE-476: NULL Pointer Dereference

FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.(CVE-2026-63076)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63072	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-63076	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "edk2-debuginfo-202308-52.oe2403sp4.aarch64.rpm",
          "edk2-debugsource-202308-52.oe2403sp4.aarch64.rpm",
          "edk2-devel-202308-52.oe2403sp4.aarch64.rpm"
        ],
        "noarch": [
          "edk2-aarch64-202308-52.oe2403sp4.noarch.rpm",
          "edk2-help-202308-52.oe2403sp4.noarch.rpm",
          "edk2-ovmf-202308-52.oe2403sp4.noarch.rpm",
          "python3-edk2-devel-202308-52.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "edk2-202308-52.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "edk2-debuginfo-202308-52.oe2403sp4.x86_64.rpm",
          "edk2-debugsource-202308-52.oe2403sp4.x86_64.rpm",
          "edk2-devel-202308-52.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "edk2",
        "purl": "pkg:rpm/openEuler/edk2\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "202308-52.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications.\r\n\r\nSecurity Fix(es):\n\nIssue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based\non querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive\ncan write and cleanse more bytes than that query reports, causing an 8-byte\nout-of-bounds heap write.\n\nImpact summary: An attacker who supplies a crafted CMS message can trigger a\ndeterministic 8-byte out-of-bounds heap write when the victim decrypts it\nwith CMS_decrypt(), corrupting the heap and typically resulting in a Denial\nof Service.\n\nCWE: CWE-787: Out-of-bounds Write\n\nDescription: The key-wrap OID is potentially attacker-controlled on the wire.\nCMS unwrapping allows both id-aesNNN-wrap-pad and id-aesNNN-wrap ciphers.\nAn attacker can take a legitimate message and change a single OID byte to\nselect the padded variant while leaving the message otherwise valid. Since\nthe unwrap key is derived from the recipient\u0026apos;s private operation (ECDH key\nagreement or ML-KEM decapsulation), the RFC 5649 integrity check cannot\npass, and the decryption fails with integrity failure.\n\nThe write is a fixed-size (8-byte), fixed-value (zero) heap overflow\nimmediately past the allocation, requires no special configuration, and is\nreachable from the public CMS_decrypt() function. The consequence is\na heap corruption leading to a Denial of Service. The fix in the CMS code\nsizes the unwrap output buffer for the worst case so a failed unwrap cannot\nwrite past the allocation.\n\nFIPS impact: no\n\nAs the CMS code lives outside the FIPS module boundary, no FIPS\nmodules are affected by this CVE.(CVE-2026-63072)\n\nIssue summary: OpenSSL CMP password based protection verification only\nchecks whether the protectionAlg parameter was not NULL and not its\nASN.1 type, before treating it as a PBMParameter. A crafted message can\ncontain a parameter of a different type, which is then dereferenced as an\ninvalid pointer.\n\nImpact summary: A remote, unauthenticated attacker can crash an application\nacting as a CMP server that accepts PBM-protected messages, or a CMP client\ntalking to a malicious or intercepted CMP server, resulting in a Denial of\nService.\n\nCWE: CWE-476: NULL Pointer Dereference\n\nDescription: When verifying the password-based MAC protection of a CMP\nmessage, OpenSSL library reads the protectionAlg algorithm parameter with\nX509_ALGOR_get0(), which returns both the parameter type and its value\npointer. The value is then cast to an ASN1_STRING and treated as the\nexpected PBMParameter after only checking that pointer is not NULL. The\nparameter type returned by X509_ALGOR_get0() was never consulted.\n\nThis happens during protection verification, before any MAC is computed, so\nno knowledge of the PBM shared secret is required; the only precondition is\nthat PBM verification is reachable. On the server side this is reached from\nOSSL_CMP_SRV_process_request() for any application that stands up a CMP\nserver accepting PBM-protected messages, and on the client side from CMP\nresponse validation against a malicious or on-path (MITM) server. The\nreliable consequence is a denial of service; there is no memory disclosure,\nno controlled memory write, and no path to code execution. CMP is a\nspecialized feature that an application must explicitly enable.\n\nFIPS impact: no\nAs the CMP code lives outside the FIPS module boundary, no FIPS modules\nare affected by this CVE.(CVE-2026-63076)",
  "id": "OESA-2026-3858",
  "modified": "2026-09-14T16:35:04Z",
  "published": "2026-09-14T16:35:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3858"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63072"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63076"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "edk2 security update",
  "upstream": [
    "CVE-2026-63072",
    "CVE-2026-63076"
  ]
}

OPENSUSE-SU-2026:11623-1

Vulnerability from csaf_opensuse - Published: 2026-08-27 00:00 - Updated: 2026-09-17 17:21

Summary

libopenssl-3-devel-3.5.3-8.1 on GA media

Severity

Moderate

Scope

11 vulnerabilities in this advisory, including CVE-2026-63076.

CVE-2026-63076

7.5 (High)


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

Recommended: 40 products

Open the full advisory

OPENSUSE-SU-2026:21744-1

Vulnerability from csaf_opensuse - Published: 2026-09-02 15:55 - Updated: 2026-09-17 17:43

Summary

Security update for openssl-3

Severity

Important

Scope

11 vulnerabilities in this advisory, including CVE-2026-63076.

CVE-2026-63076

7.5 (High)


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

Recommended: 19 products

Open the full advisory

RHSA-2026:67154

Vulnerability from csaf_opensuse - Published: 2026-09-14 00:00 - Updated: 2026-09-18 17:15

Summary

security update for openssl

Severity

Important

Scope

9 vulnerabilities in this advisory, including CVE-2026-63076.

CVE-2026-63076

7.5 (High)


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

Recommended: 4 products

Open the full advisory

RHSA-2026:67165

Vulnerability from csaf_opensuse - Published: 2026-09-14 00:00 - Updated: 2026-09-17 08:54

Summary

security update for openssl

Severity

Important

Scope

9 vulnerabilities in this advisory, including CVE-2026-63076.

CVE-2026-63076

7.5 (High)


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

Recommended: 6 products

Open the full advisory

RHSA-2026:59635

Vulnerability from csaf_redhat - Published: 2026-08-25 21:50 - Updated: 2026-09-14 07:58

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Scope

8 vulnerabilities in this advisory, including CVE-2026-63076.

CVE-2026-63076

A flaw was found in OpenSSL. A crafted CMP (Certificate Management Protocol) message can cause an invalid pointer dereference due to a missing type check in the password-based protection verification. A remote, unauthenticated attacker can crash applications acting as a CMP server or client, resulting in a denial of service.

7.5 (High)


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

Fixed: 3 products

https://access.redhat.com/errata/RHSA-2026:59635

Open the full advisory

RHSA-2026:59641

Vulnerability from csaf_redhat - Published: 2026-08-25 21:57 - Updated: 2026-09-14 07:59

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Scope

8 vulnerabilities in this advisory, including CVE-2026-63076.

CVE-2026-63076

7.5 (High)


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

Fixed: 3 products

https://access.redhat.com/errata/RHSA-2026:59641

Open the full advisory

RLSA-2026:67154 (CVE-2026-14456)

Vulnerability from osv_rocky – Published: 2026-09-15 12:08 – Updated: 2026-09-19 06:13 – Source website

Summary

Important: openssl security, bug fix, and enhancement update

Details

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

openssl: OpenSSL: Denial of Service via unbounded memory growth in QUIC server (CVE-2026-14456)
openssl: QUIC server may trigger double free when processing INITIAL packet (CVE-2026-18798)
openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)
openssl: invalid pointer dereference in CMP server via crafted protectionAlg (CVE-2026-63076)
openssl: RPK server signature algorithm selection can dereference a missing certificate (CVE-2026-14457)
openssl: excessive memory use buffering DTLS records for a future epoch (CVE-2026-54874)
openssl: untrusted sender DN used as format string in CMP response validation (CVE-2026-63073)
openssl: CMP indefinite cache growth of ExtraCerts (CVE-2026-63074)
openssl: QUIC ACK-only packet retention can cause memory exhaustion (CVE-2026-63075)

Bug Fix(es) and Enhancement(s):

openssl: HollowByte remote memory-exhaustion DoS fix may be missing [Rocky Linux 10.2.z] (JIRA:Rocky Linux-212362)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

7.5 (High)


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

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:67154	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2515348	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517559	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517560	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517561	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517562	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517564	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517565	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517566	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517570	REPORT
	https://access.redhat.com/errata/RHSA-2026:67154	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "openssl",
        "purl": "pkg:rpm/rocky-linux/openssl?distro=rocky-linux-10\u0026epoch=1"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:3.5.8-1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:67154"
  },
  "details": "OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.\n\nSecurity Fix(es):\n\n* openssl: OpenSSL: Denial of Service via unbounded memory growth in QUIC server (CVE-2026-14456)\n\n* openssl: QUIC server may trigger double free when processing INITIAL packet (CVE-2026-18798)\n\n* openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)\n\n* openssl: invalid pointer dereference in CMP server via crafted protectionAlg (CVE-2026-63076)\n\n* openssl: RPK server signature algorithm selection can dereference a missing certificate (CVE-2026-14457)\n\n* openssl: excessive memory use buffering DTLS records for a future epoch (CVE-2026-54874)\n\n* openssl: untrusted sender DN used as format string in CMP response validation (CVE-2026-63073)\n\n* openssl: CMP indefinite cache growth of ExtraCerts (CVE-2026-63074)\n\n* openssl: QUIC ACK-only packet retention can cause memory exhaustion (CVE-2026-63075)\n\nBug Fix(es) and Enhancement(s):\n\n* openssl: HollowByte remote memory-exhaustion DoS fix may be missing [Rocky Linux 10.2.z] (JIRA:Rocky Linux-212362)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:67154",
  "modified": "2026-09-19T06:13:43.264577Z",
  "published": "2026-09-15T12:08:56.876794Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:67154"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515348"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517559"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517560"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517561"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517562"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517564"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517565"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517566"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517570"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:67154"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: openssl security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-14456",
    "CVE-2026-14457",
    "CVE-2026-18798",
    "CVE-2026-54874",
    "CVE-2026-63072",
    "CVE-2026-63073",
    "CVE-2026-63074",
    "CVE-2026-63075",
    "CVE-2026-63076"
  ]
}

RLSA-2026:67165 (CVE-2026-14456)

Vulnerability from osv_rocky – Published: 2026-09-15 18:05 – Updated: 2026-09-19 06:13 – Source website

Summary

Important: openssl security, bug fix, and enhancement update

Details

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

openssl: OpenSSL: Denial of Service via unbounded memory growth in QUIC server (CVE-2026-14456)
openssl: QUIC server may trigger double free when processing INITIAL packet (CVE-2026-18798)
openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)
openssl: invalid pointer dereference in CMP server via crafted protectionAlg (CVE-2026-63076)
openssl: RPK server signature algorithm selection can dereference a missing certificate (CVE-2026-14457)
openssl: excessive memory use buffering DTLS records for a future epoch (CVE-2026-54874)
openssl: untrusted sender DN used as format string in CMP response validation (CVE-2026-63073)
openssl: CMP indefinite cache growth of ExtraCerts (CVE-2026-63074)
openssl: QUIC ACK-only packet retention can cause memory exhaustion (CVE-2026-63075)

Bug Fix(es) and Enhancement(s):

openssl: HollowByte remote memory-exhaustion DoS fix may be missing [Rocky Linux 9.8.z] (JIRA:Rocky Linux-232828)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

7.5 (High)


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

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:67165	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2515348	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517559	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517560	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517561	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517562	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517564	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517565	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517566	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2517570	REPORT
	https://access.redhat.com/errata/RHSA-2026:67165	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "openssl",
        "purl": "pkg:rpm/rocky-linux/openssl?distro=rocky-linux-9\u0026epoch=1"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:3.5.8-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:67165"
  },
  "details": "OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.\n\nSecurity Fix(es):\n\n* openssl: OpenSSL: Denial of Service via unbounded memory growth in QUIC server (CVE-2026-14456)\n\n* openssl: QUIC server may trigger double free when processing INITIAL packet (CVE-2026-18798)\n\n* openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)\n\n* openssl: invalid pointer dereference in CMP server via crafted protectionAlg (CVE-2026-63076)\n\n* openssl: RPK server signature algorithm selection can dereference a missing certificate (CVE-2026-14457)\n\n* openssl: excessive memory use buffering DTLS records for a future epoch (CVE-2026-54874)\n\n* openssl: untrusted sender DN used as format string in CMP response validation (CVE-2026-63073)\n\n* openssl: CMP indefinite cache growth of ExtraCerts (CVE-2026-63074)\n\n* openssl: QUIC ACK-only packet retention can cause memory exhaustion (CVE-2026-63075)\n\nBug Fix(es) and Enhancement(s):\n\n* openssl: HollowByte remote memory-exhaustion DoS fix may be missing [Rocky Linux 9.8.z] (JIRA:Rocky Linux-232828)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:67165",
  "modified": "2026-09-19T06:13:37.512728Z",
  "published": "2026-09-15T18:05:37.908911Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:67165"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515348"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517559"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517560"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517561"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517562"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517564"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517565"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517566"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517570"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:67165"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: openssl security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-14456",
    "CVE-2026-14457",
    "CVE-2026-18798",
    "CVE-2026-54874",
    "CVE-2026-63072",
    "CVE-2026-63073",
    "CVE-2026-63074",
    "CVE-2026-63075",
    "CVE-2026-63076"
  ]
}

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-2026-63076 (GCVE-0-2026-63076)

OESA-2026-3857 (CVE-2026-63072)

OESA-2026-3858 (CVE-2026-63072)

OPENSUSE-SU-2026:11623-1

OPENSUSE-SU-2026:21744-1

RHSA-2026:67154

RHSA-2026:67165

RHSA-2026:59635

RHSA-2026:59641

RLSA-2026:67154 (CVE-2026-14456)

RLSA-2026:67165 (CVE-2026-14456)

Tags

Sightings

Nomenclature

Related by attack behaviour