Affects FFmpeg, a widely used multimedia library, impacting many apps across industries.
CVE-2026-58049
FFmpeg RASC decoder allows out-of-bounds memory write/read via crafted PAL8 stream.
Is CVE-2026-58049 being exploited?
Not confirmed. CVE-2026-58049 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 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-58049?
CVE-2026-58049 is rated High with a CVSS score of 8.8. 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-2026-58049?
Yes. A fix has been recorded for CVE-2026-58049. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-58049 affect?
CVE-2026-58049 affects FFmpeg, libavcodec (rasc). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-58049?
Update FFmpeg to patched version immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Memory corruption from out-of-bounds writes/reads, potentially crash or code execution via crafted stream.
Patch when possible
- affected<= bcd2c69e087a09b07cf45c6bd2428ee1ccb2925c
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.