Vulnerability in VC-2/Dirac RTP packetizer (CVE-2026-75144)
Summary
Vulnerability in VC-2/Dirac RTP packetizer (CVE-2026-75144). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
FFmpeg before commit 1cdeb3c contains a heap buffer overflow vulnerability in the VC-2/Dirac RTP packetizer (libavformat/rtpenc_vc2hq.c) that allows attackers to trigger memory corruption by supplying a crafted Dirac data unit. The packetizer copies an input-derived data unit or fragment size into a fixed-size buffer without an upper bound check, causing a heap buffer overflow when the crafted input is packetized for RTP output.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-75144 has been found in VC-2/Dirac RTP packetizer.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "VC-2/Dirac RTP packetizer CVE-2026-75144" on the vendor's site.
CVE-2026-75144 (VC-2/Dirac RTP packetizer) — CWE-122 / CVSS v3 7.8
Attack vector: local / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-122) exists in VC-2/Dirac RTP packetizer.
Check the vendor advisory for the affected versions of VC-2/Dirac RTP packetizer.
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで VC-2/Dirac RTP packetizer を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-75144 ffmpeg
- Ubuntu UBUNTU-CVE-2026-75144 libav
References
- advisory vulncheck.com
- advisory nvd.nist.gov
- advisory github.com
- patch code.ffmpeg.org
- report code.ffmpeg.org
- web github.com
- web code.ffmpeg.org