Heap Buffer Overflow in FFmpeg VP9 Decoder
CVE-2026-39217 is a heap buffer overflow in FFmpeg's VP9 decoder. The provided content identifies it as a regression introduced in March 2025. No vulnerable function name, code path, trigger condition, or patch-level technical root cause is provided beyond the fact that the flaw resides in the VP9 decoder and results in a heap-based out-of-bounds write condition.
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Impact, mitigation & remediation
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Impact
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Mitigation
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Remediation
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Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Recent activity
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Heap buffer overflow vulnerability in FFmpeg's VP9 decoder.
One of nine FFmpeg vulnerabilities identified by an autonomous AI agent; the FFmpeg findings are described as mostly heap or stack overflows in parsers and demuxers.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.