CVE-2026-5673

MEDIUM

5.6

Description

A flaw was found in libtheora. This heap-based out-of-bounds read vulnerability exists within the AVI (Audio Video Interleave) parser, specifically in the avi_parse_input_file() function. A local attacker could exploit this by tricking a user into opening a specially crafted AVI file containing a truncated header sub-chunk. This could lead to a denial-of-service (application crash) or potentially leak sensitive information from the heap.

CVE Details

CVSS v3.1 Score5.6

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published4/6/2026

Last Modified4/6/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-125

References

https://access.redhat.com/security/cve/CVE-2026-5673(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2455340(secalert@redhat.com)

https://github.com/xiph/theora/issues/24(secalert@redhat.com)

IOC Correlations

No correlations recorded

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