CVE-2026-75142
Stack buffer overflow in FFmpeg MPEG-PS muxer permitting crash or RCE via crafted input
Is CVE-2026-75142 being exploited?
Not confirmed. CVE-2026-75142 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-75142?
CVE-2026-75142 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-75142?
Yes. A fix has been recorded for CVE-2026-75142. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-75142 affect?
CVE-2026-75142 affects FFmpeg (pre-commit 9d786e4), Applications/libraries embedding FFmpeg MPEG-PS muxer, Media servers, transcoders, streaming platforms. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-75142?
Upgrade FFmpeg to commit 9d786e4+ and avoid processing untrusted MPEG-PS inputs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted MPEG-PS input with excessive streams can trigger a stack buffer overflow, causing process crash or potential remote code execution in the muxing process.
Immediate action required
- affected< 9d786e4b5e9b8482651928574de33772aeee7be1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.