Vulnerability-Lookup

RHSA-2026:2077

Vulnerability from csaf_redhat - Published: 2026-02-11 04:41 - Updated: 2026-02-12 19:30

Summary

Red Hat Security Advisory: OpenShift Container Platform 4.20.14 bug fix and security update

Notes

Topic

Red Hat OpenShift Container Platform release 4.20.14 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.20. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.20.14. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2026:2076 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/release_notes/ Security Fix(es): * openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing (CVE-2025-15467) 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. All OpenShift Container Platform 4.20 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html-single/updating_clusters/index#updating-cluster-cli.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Red Hat OpenShift Container Platform release 4.20.14 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\n This release includes a security update for Red Hat OpenShift Container\nPlatform 4.20.\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "Red Hat OpenShift Container Platform is Red Hat\u0027s cloud computing\nKubernetes application platform solution designed for on-premise or private\ncloud deployments.\n\nThis advisory contains the container images for Red Hat OpenShift Container\nPlatform 4.20.14. See the following advisory for the RPM packages for this\nrelease:\n\nhttps://access.redhat.com/errata/RHBA-2026:2076\n\nSpace precludes documenting all of the container images in this advisory.\nSee the following Release Notes documentation, which will be updated\nshortly for this release, for details about these changes:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/release_notes/\n\nSecurity Fix(es):\n\n* openssl: OpenSSL: Remote code execution or Denial of Service via\noversized Initialization Vector in CMS parsing (CVE-2025-15467)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section.\n\nAll OpenShift Container Platform 4.20 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:2077",
        "url": "https://access.redhat.com/errata/RHSA-2026:2077"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "2430376",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430376"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_2077.json"
      }
    ],
    "title": "Red Hat Security Advisory: OpenShift Container Platform 4.20.14 bug fix and security update",
    "tracking": {
      "current_release_date": "2026-02-12T19:30:21+00:00",
      "generator": {
        "date": "2026-02-12T19:30:21+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.7.1"
        }
      },
      "id": "RHSA-2026:2077",
      "initial_release_date": "2026-02-11T04:41:05+00:00",
      "revision_history": [
        {
          "date": "2026-02-11T04:41:05+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-02-11T04:41:05+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-02-12T19:30:21+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat OpenShift Container Platform 4.20",
                "product": {
                  "name": "Red Hat OpenShift Container Platform 4.20",
                  "product_id": "9Base-RHOSE-4.20",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:openshift:4.20::el9"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat OpenShift Enterprise"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rhcos-aarch64-4.20.9.6.202602050328-0",
                "product": {
                  "name": "rhcos-aarch64-4.20.9.6.202602050328-0",
                  "product_id": "rhcos-aarch64-4.20.9.6.202602050328-0",
                  "product_identification_helper": {
                    "purl": "pkg:generic/redhat/rhcos@4.20.9.6.202602050328?arch=aarch64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rhcos-ppc64le-4.20.9.6.202602050328-0",
                "product": {
                  "name": "rhcos-ppc64le-4.20.9.6.202602050328-0",
                  "product_id": "rhcos-ppc64le-4.20.9.6.202602050328-0",
                  "product_identification_helper": {
                    "purl": "pkg:generic/redhat/rhcos@4.20.9.6.202602050328?arch=ppc64le"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64le"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rhcos-s390x-4.20.9.6.202602050328-0",
                "product": {
                  "name": "rhcos-s390x-4.20.9.6.202602050328-0",
                  "product_id": "rhcos-s390x-4.20.9.6.202602050328-0",
                  "product_identification_helper": {
                    "purl": "pkg:generic/redhat/rhcos@4.20.9.6.202602050328?arch=s390x"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "rhcos-x86_64-4.20.9.6.202602050328-0",
                "product": {
                  "name": "rhcos-x86_64-4.20.9.6.202602050328-0",
                  "product_id": "rhcos-x86_64-4.20.9.6.202602050328-0",
                  "product_identification_helper": {
                    "purl": "pkg:generic/redhat/rhcos@4.20.9.6.202602050328?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhcos-aarch64-4.20.9.6.202602050328-0 as a component of Red Hat OpenShift Container Platform 4.20",
          "product_id": "9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202602050328-0"
        },
        "product_reference": "rhcos-aarch64-4.20.9.6.202602050328-0",
        "relates_to_product_reference": "9Base-RHOSE-4.20"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhcos-ppc64le-4.20.9.6.202602050328-0 as a component of Red Hat OpenShift Container Platform 4.20",
          "product_id": "9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202602050328-0"
        },
        "product_reference": "rhcos-ppc64le-4.20.9.6.202602050328-0",
        "relates_to_product_reference": "9Base-RHOSE-4.20"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhcos-s390x-4.20.9.6.202602050328-0 as a component of Red Hat OpenShift Container Platform 4.20",
          "product_id": "9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202602050328-0"
        },
        "product_reference": "rhcos-s390x-4.20.9.6.202602050328-0",
        "relates_to_product_reference": "9Base-RHOSE-4.20"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhcos-x86_64-4.20.9.6.202602050328-0 as a component of Red Hat OpenShift Container Platform 4.20",
          "product_id": "9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202602050328-0"
        },
        "product_reference": "rhcos-x86_64-4.20.9.6.202602050328-0",
        "relates_to_product_reference": "9Base-RHOSE-4.20"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-15467",
      "cwe": {
        "id": "CWE-120",
        "name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
      },
      "discovery_date": "2026-01-16T14:21:50.710000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2430376"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in OpenSSL. A remote attacker can exploit a stack buffer overflow vulnerability by supplying a crafted Cryptographic Message Syntax (CMS) message with an oversized Initialization Vector (IV) when parsing AuthEnvelopedData structures that use Authenticated Encryption with Associated Data (AEAD) ciphers such as AES-GCM. This can lead to a crash, causing a Denial of Service (DoS), or potentially allow for remote code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated Important for Red Hat products. On Red Hat Enterprise Linux, OpenSSL is built with stack protections enabled which mitigate the risk of code execution though a denial-of-service condition remains possible. This vulnerability only affects applications and services that parse untrusted CMS or PKCS#7 content using AEAD ciphers, such as Kerberos using the PKINIT plugin. OpenSSL versions 1.1.1 and 1.0.2 are not affected by this issue.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202602050328-0",
          "9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202602050328-0",
          "9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202602050328-0",
          "9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202602050328-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-15467"
        },
        {
          "category": "external",
          "summary": "RHBZ#2430376",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2430376"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-15467",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-15467"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-15467",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15467"
        }
      ],
      "release_date": "2026-01-27T14:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-02-11T04:41:05+00:00",
          "details": "For OpenShift Container Platform 4.20 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:682e85bfe8034924e596b281ed8fefe4451e6f6c5bac07b5ec300443eeb23566\n\n      (For s390x architecture)\n      The image digest is sha256:66cf2025ec50387370ab50d72677c4c07291a7b6d00f64fbd3847a1f09b74a34\n\n      (For ppc64le architecture)\n      The image digest is sha256:1214b651712a42e5b9b514fa1d0f225fe0297ccd0ea438820fac4f9ecf87380b\n\n      (For aarch64 architecture)\n      The image digest is sha256:c8625f4fa6492a1d36d5dccf36407ea0ac35672fe62e8ec1293df5ed90b643b2\n\nAll OpenShift Container Platform 4.20 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.20/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202602050328-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:2077"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202602050328-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "9Base-RHOSE-4.20:rhcos-aarch64-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-ppc64le-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-s390x-4.20.9.6.202602050328-0",
            "9Base-RHOSE-4.20:rhcos-x86_64-4.20.9.6.202602050328-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing"
    }
  ]
}

CVE-2025-15467 (GCVE-0-2025-15467)

Vulnerability from cvelistv5 – Published: 2026-01-27 16:01 – Updated: 2026-01-29 14:50

Title

Stack buffer overflow in CMS AuthEnvelopedData parsing

Summary

Issue summary: Parsing CMS AuthEnvelopedData message with maliciously crafted AEAD parameters can trigger a stack buffer overflow. Impact summary: A stack buffer overflow may lead to a crash, causing Denial of Service, or potentially remote code execution. When parsing CMS AuthEnvelopedData structures that use AEAD ciphers such as AES-GCM, the IV (Initialization Vector) encoded in the ASN.1 parameters is copied into a fixed-size stack buffer without verifying that its length fits the destination. An attacker can supply a crafted CMS message with an oversized IV, causing a stack-based out-of-bounds write before any authentication or tag verification occurs. Applications and services that parse untrusted CMS or PKCS#7 content using AEAD ciphers (e.g., S/MIME AuthEnvelopedData with AES-GCM) are vulnerable. Because the overflow occurs prior to authentication, no valid key material is required to trigger it. While exploitability to remote code execution depends on platform and toolchain mitigations, the stack-based write primitive represents a severe risk. The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the CMS implementation is outside the OpenSSL FIPS module boundary. OpenSSL 3.6, 3.5, 3.4, 3.3 and 3.0 are vulnerable to this issue. OpenSSL 1.1.1 and 1.0.2 are not affected by this issue.

Severity ?

No CVSS data available.

CWE

CWE-787 - Out-of-bounds Write

Assigner

openssl

References

URL

Tags

	https://openssl-library.org/news/secadv/20260127.txt	vendor-advisory
	https://github.com/openssl/openssl/commit/2c8f0e5…	patch
	https://github.com/openssl/openssl/commit/d0071a0…	patch
	https://github.com/openssl/openssl/commit/6ced0fe…	patch
	https://github.com/openssl/openssl/commit/5f26d42…	patch
	https://github.com/openssl/openssl/commit/ce39170…	patch

Impacted products

	Vendor	Product	Version
	OpenSSL	OpenSSL	Affected: 3.6.0 , < 3.6.1 (semver) Affected: 3.5.0 , < 3.5.5 (semver) Affected: 3.4.0 , < 3.4.4 (semver) Affected: 3.3.0 , < 3.3.6 (semver) Affected: 3.0.0 , < 3.0.19 (semver)

Credits

Stanislav Fort (Aisle Research) Igor Ustinov

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-01-27T22:04:24.790Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/01/27/10"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-15467",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-29T14:50:31.874299Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-29T14:50:58.363Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "OpenSSL",
          "vendor": "OpenSSL",
          "versions": [
            {
              "lessThan": "3.6.1",
              "status": "affected",
              "version": "3.6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.5.5",
              "status": "affected",
              "version": "3.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.4.4",
              "status": "affected",
              "version": "3.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.3.6",
              "status": "affected",
              "version": "3.3.0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.0.19",
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Stanislav Fort (Aisle Research)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Igor Ustinov"
        }
      ],
      "datePublic": "2026-01-27T14:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Issue summary: Parsing CMS AuthEnvelopedData message with maliciously\u003cbr\u003ecrafted AEAD parameters can trigger a stack buffer overflow.\u003cbr\u003e\u003cbr\u003eImpact summary: A stack buffer overflow may lead to a crash, causing Denial\u003cbr\u003eof Service, or potentially remote code execution.\u003cbr\u003e\u003cbr\u003eWhen parsing CMS AuthEnvelopedData structures that use AEAD ciphers such as\u003cbr\u003eAES-GCM, the IV (Initialization Vector) encoded in the ASN.1 parameters is\u003cbr\u003ecopied into a fixed-size stack buffer without verifying that its length fits\u003cbr\u003ethe destination. An attacker can supply a crafted CMS message with an\u003cbr\u003eoversized IV, causing a stack-based out-of-bounds write before any\u003cbr\u003eauthentication or tag verification occurs.\u003cbr\u003e\u003cbr\u003eApplications and services that parse untrusted CMS or PKCS#7 content using\u003cbr\u003eAEAD ciphers (e.g., S/MIME AuthEnvelopedData with AES-GCM) are vulnerable.\u003cbr\u003eBecause the overflow occurs prior to authentication, no valid key material\u003cbr\u003eis required to trigger it. While exploitability to remote code execution\u003cbr\u003edepends on platform and toolchain mitigations, the stack-based write\u003cbr\u003eprimitive represents a severe risk.\u003cbr\u003e\u003cbr\u003eThe FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this\u003cbr\u003eissue, as the CMS implementation is outside the OpenSSL FIPS module\u003cbr\u003eboundary.\u003cbr\u003e\u003cbr\u003eOpenSSL 3.6, 3.5, 3.4, 3.3 and 3.0 are vulnerable to this issue.\u003cbr\u003e\u003cbr\u003eOpenSSL 1.1.1 and 1.0.2 are not affected by this issue."
            }
          ],
          "value": "Issue summary: Parsing CMS AuthEnvelopedData message with maliciously\ncrafted AEAD parameters can trigger a stack buffer overflow.\n\nImpact summary: A stack buffer overflow may lead to a crash, causing Denial\nof Service, or potentially remote code execution.\n\nWhen parsing CMS AuthEnvelopedData structures that use AEAD ciphers such as\nAES-GCM, the IV (Initialization Vector) encoded in the ASN.1 parameters is\ncopied into a fixed-size stack buffer without verifying that its length fits\nthe destination. An attacker can supply a crafted CMS message with an\noversized IV, causing a stack-based out-of-bounds write before any\nauthentication or tag verification occurs.\n\nApplications and services that parse untrusted CMS or PKCS#7 content using\nAEAD ciphers (e.g., S/MIME AuthEnvelopedData with AES-GCM) are vulnerable.\nBecause the overflow occurs prior to authentication, no valid key material\nis required to trigger it. While exploitability to remote code execution\ndepends on platform and toolchain mitigations, the stack-based write\nprimitive represents a severe risk.\n\nThe FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this\nissue, as the CMS implementation is outside the OpenSSL FIPS module\nboundary.\n\nOpenSSL 3.6, 3.5, 3.4, 3.3 and 3.0 are vulnerable to this issue.\n\nOpenSSL 1.1.1 and 1.0.2 are not affected by this issue."
        }
      ],
      "metrics": [
        {
          "format": "other",
          "other": {
            "content": {
              "text": "High"
            },
            "type": "https://openssl-library.org/policies/general/security-policy/"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-27T16:01:19.922Z",
        "orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
        "shortName": "openssl"
      },
      "references": [
        {
          "name": "OpenSSL Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://openssl-library.org/news/secadv/20260127.txt"
        },
        {
          "name": "3.6.1 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/2c8f0e5fa9b6ee5508a0349e4572ddb74db5a703"
        },
        {
          "name": "3.5.5 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/d0071a0799f20cc8101730145349ed4487c268dc"
        },
        {
          "name": "3.4.4 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/6ced0fe6b10faa560e410e3ee8d6c82f06c65ea3"
        },
        {
          "name": "3.3.6 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/5f26d4202f5b89664c5c3f3c62086276026ba9a9"
        },
        {
          "name": "3.0.19 git commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/openssl/openssl/commit/ce39170276daec87f55c39dad1f629b56344429e"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Stack buffer overflow in CMS AuthEnvelopedData parsing",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2025-15467",
    "datePublished": "2026-01-27T16:01:19.922Z",
    "dateReserved": "2026-01-06T09:26:41.631Z",
    "dateUpdated": "2026-01-29T14:50:58.363Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

RHSA-2026:2077

CVE-2025-15467 (GCVE-0-2025-15467)

Tags

Sightings

Nomenclature