Vulnerability record/PUBLISHED/Published Nov 9, 2026 19:12:05 UTC
CVE-2026-125263
FFmpeg 9.0 through 9.0.2 built with liblcevc_dec fails to validate LCEVC enhanced output dimensions against max_pixels in libavcodec/decode.c before frame allocation. Attackers can supply crafted H.264, HEVC or VVC streams declaring huge LCEVC resolutions to force oversized get_buffer2() allocations and exhaust memory.
Base score5.7/ 10
SeverityMediumCVSS 4.0
Exploitability / impact
CVSS metric breakdown
Base severityMedium
Attack vectorLocalAV
Attack complexityHighAC
Attack requirementsPresentAT
Privileges requiredNonePR
User interactionPassiveUI
Vulnerable system confidentialityNoneVC
Vulnerable system integrityNoneVI
Vulnerable system availabilityHighVA
Subsequent system confidentialityNoneSC
Subsequent system integrityNoneSI
Subsequent system availabilityNoneSA
CVSS vector string
CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.
Record context
CVE Numbering AuthorityVulnCheck
Last updatedNov 9, 2026 20:56:48 UTC
PublishedNov 9, 2026 19:12:05 UTC
ReservedNov 9, 2026 18:15:34 UTC
Credits
- Joshua Rogers (AISLE Research)
- Michael Niedermayer