CVE-2026-6385 (GCVE-0-2026-6385)

Vulnerability from cvelistv5 – Published: 2026-04-15 19:18 – Updated: 2026-04-15 20:01
VLAI
Title
Ffmpeg: ffmpeg: denial of service and potential arbitrary code execution via signed integer overflow in dvd subtitle parser
Summary
A flaw was found in FFmpeg. A remote attacker could exploit this vulnerability by providing a specially crafted MPEG-PS/VOB media file containing a malicious DVD subtitle stream. This vulnerability is caused by a signed integer overflow in the DVD subtitle parser's fragment reassembly bounds checks, leading to a heap out-of-bounds write. Successful exploitation can result in a denial of service (DoS) due to an application crash, and potentially lead to arbitrary code execution.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-15 20:00 UTC
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1085 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-6385 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2458764 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-04-15 19:11
Credits
Red Hat would like to thank Quang Luong (Calif.io in collaboration with OpenAI Codex) for reporting this issue.
Show details on NVD website
To clipboard 

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              "value": "A flaw was found in FFmpeg. A remote attacker could exploit this vulnerability by providing a specially crafted MPEG-PS/VOB media file containing a malicious DVD subtitle stream. This vulnerability is caused by a signed integer overflow in the DVD subtitle parser\u0027s fragment reassembly bounds checks, leading to a heap out-of-bounds write. Successful exploitation can result in a denial of service (DoS) due to an application crash, and potentially lead to arbitrary code execution."
            }
          ],
          "metrics": [
            {
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                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Moderate"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
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          ],
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              "descriptions": [
                {
                  "cweId": "CWE-190",
                  "description": "Integer Overflow or Wraparound",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-04-15T19:18:39.354Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
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          "references": [
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              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-6385"
            },
            {
              "name": "RHBZ#2458764",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
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              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458764"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-04-15T19:11:15.167Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-04-15T19:11:47.803Z",
              "value": "Made public."
            }
          ],
          "title": "Ffmpeg: ffmpeg: denial of service and potential arbitrary code execution via signed integer overflow in dvd subtitle parser",
          "workarounds": [
            {
              "lang": "en",
              "value": "To mitigate this issue, avoid processing untrusted MPEG-PS/VOB media files with FFmpeg. If FFmpeg is used in automated media processing services, implement strict input validation and isolation to prevent the ingestion of malicious files from untrusted sources. For end-user applications, refrain from opening or playing untrusted media files."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-190: Integer Overflow or Wraparound"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-6385",
        "datePublished": "2026-04-15T19:18:39.354Z",
        "dateReserved": "2026-04-15T19:11:41.901Z",
        "dateUpdated": "2026-04-15T20:01:15.671Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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