VULNERABILITY INTELLIGENCE

CVE-2026-70628

CVSS score7.8 HIGH
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-08-06
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

FFmpeg versions from 0.5 up to, but not including, 9.0 contain a signed integer overflow vulnerability in the DVB subtitle parser in libavcodec/dvbsub_parser.c that allows attackers to trigger a heap buffer overflow by supplying a crafted WTV file. The overflow causes the bounds-check guard expression to wrap to INT_MIN, bypassing the PARSE_BUF_SIZE comparison and invoking memcpy() with attacker-controlled data into a heap buffer, resulting in an out-of-bounds heap write and potential memory corruption or code execution.

Weakness classification

  • disclosure@vulncheck.com: CWE-190

Primary references