Vulnerability record/PUBLISHED/Published Nov 9, 2026 19:11:53 UTC
CVE-2026-125246
FFmpeg through 9.0.2 contains a denial of service vulnerability in cbs_jpeg_assemble_fragment() that miscounts 0xff stuffing bytes in JPEG scan headers. Attackers can supply a crafted JPEG/MJPEG stream with 0xff in the scan header, triggering an av_assert0 abort when CBS-based bitstream filters process it.
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 19:11:53 UTC
ReservedNov 9, 2026 18:15:28 UTC
Credits
- Joshua Rogers (AISLE Research)
- Michael Niedermayer