CVE-2026-21088

Improper input validation in loading a subtitle frame in libsubextractor.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.

  • Published Sep 9, 2026
  • CVSS 6.9 medium
  • 0.1% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-21088 at the National Vulnerability Database