Vulnerability-Lookup

OESA-2026-3211 (CVE-2025-63757)

Vulnerability from osv_openeuler – Published: 2026-08-01 11:12 – Updated: 2026-08-06 11:12 – Source website

Summary

ffmpeg security update

Details

FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.

Security Fix(es):

Integer overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.(CVE-2025-63757)

FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.(CVE-2026-40962)

Severity

9.8 (Critical)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-63757	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-40962	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "ffmpeg-4.2.4-44.oe2003sp4.aarch64.rpm",
          "ffmpeg-debuginfo-4.2.4-44.oe2003sp4.aarch64.rpm",
          "ffmpeg-debugsource-4.2.4-44.oe2003sp4.aarch64.rpm",
          "ffmpeg-devel-4.2.4-44.oe2003sp4.aarch64.rpm",
          "ffmpeg-libs-4.2.4-44.oe2003sp4.aarch64.rpm",
          "libavdevice-4.2.4-44.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "ffmpeg-4.2.4-44.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "ffmpeg-4.2.4-44.oe2003sp4.x86_64.rpm",
          "ffmpeg-debuginfo-4.2.4-44.oe2003sp4.x86_64.rpm",
          "ffmpeg-debugsource-4.2.4-44.oe2003sp4.x86_64.rpm",
          "ffmpeg-devel-4.2.4-44.oe2003sp4.x86_64.rpm",
          "ffmpeg-libs-4.2.4-44.oe2003sp4.x86_64.rpm",
          "libavdevice-4.2.4-44.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "ffmpeg",
        "purl": "pkg:rpm/openEuler/ffmpeg\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.2.4-44.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nInteger overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.(CVE-2025-63757)\n\nFFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.(CVE-2026-40962)",
  "id": "OESA-2026-3211",
  "modified": "2026-08-06T11:12:05Z",
  "published": "2026-08-01T11:12:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3211"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-63757"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40962"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ffmpeg security update",
  "upstream": [
    "CVE-2025-63757",
    "CVE-2026-40962"
  ]
}

CVE-2025-63757 (GCVE-0-2025-63757)

Vulnerability from cvelistv5 – Published: 2025-12-18 00:00 – Updated: 2025-12-18 19:31

Summary

Integer overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.

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 2025-12-18 19:29 UTC

CWE

n/a
CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

3 references

URL	Tags
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20698
https://gist.github.com/miora-sora/43c1c5616dd5b4…
https://ffmpeg.org/security.html

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
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                "timestamp": "2025-12-18T19:29:55.895559Z",
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        "providerMetadata": {
          "dateUpdated": "2025-12-18T19:31:22.092Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "url": "https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20698"
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          "url": "https://gist.github.com/miora-sora/43c1c5616dd5b4f960a9d20296ef4833"
        },
        {
          "url": "https://ffmpeg.org/security.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-63757",
    "datePublished": "2025-12-18T00:00:00.000Z",
    "dateReserved": "2025-10-27T00:00:00.000Z",
    "dateUpdated": "2025-12-18T19:31:22.092Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-40962 (GCVE-0-2026-40962)

Vulnerability from cvelistv5 – Published: 2026-04-16 01:33 – Updated: 2026-04-16 12:31

Summary

FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.

Severity

4.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-16 12:20 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22348

Impacted products

1 product

Vendor	Product	Version
FFmpeg	FFmpeg	Affected: 4.1 , < 8.1 (custom) cpe:2.3:a:ffmpeg:ffmpeg::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-40962",
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-16T12:20:13.367652Z",
                "version": "2.0.3"
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      }
    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "FFmpeg",
          "vendor": "FFmpeg",
          "versions": [
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              "lessThan": "8.1",
              "status": "affected",
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      ],
      "cpeApplicability": [
        {
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            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "8.1",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                }
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
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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

OESA-2026-3211 (CVE-2025-63757)

CVE-2025-63757 (GCVE-0-2025-63757)

CVE-2026-40962 (GCVE-0-2026-40962)

Tags

Sightings

Nomenclature

Related by attack behaviour