Libtheora · Libtheora · CVE-2026-5673
**Name of the Vulnerable Software and Affected Versions**
libtheora (affected versions not specified)
**Description**
A heap-based out-of-bounds read flaw exists in libtheora's AVI (Audio Video Interleave) parser, specifically within the `avi parse input file()` function. A local attacker could exploit this by crafting a malicious AVI file with a truncated header sub-chunk. This could result in a denial-of-service (application crash) or potential information leakage from the heap.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.