PT-2026-68785
CVE-2026-70629
·
Published
2026-08-06
·
Updated
2026-09-18
Description by
CVSS 4.0
6.8
MediumMetricsAV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions
FFmpeg versions 3.0 through 8.x
Description
The native RSCC decoder in
libavcodec/rscc.c contains an uninitialized heap memory read issue. An attacker can disclose heap memory contents by providing a specially crafted video file containing a compressed tile that decompresses fewer bytes than the declared tile geometry requires. This occurs when the rscc decode frame() function calls av image copy plane() without validating the decompressed byte count against the tile dimensions. Consequently, the unwritten suffix of the persistent intermediate buffer ctx->inflated buf is copied into the decoded frame, which may expose data from previous heap allocations or previously decoded frames in persistent decoding services.Recommendations
Update to version 9.0 or later.
Exploitability
Exploit
Fix
Impacts
Vendors
Affected products
Found an issue in the description? Have something to add? Feel free to write us 👾