Dashboard / CVE-2026-5673

CVE-2026-5673

HIGH
MEDIUM Priority: 0.01 BB Relevance: 39/100
Published: 2026-04-06 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: None
A: High

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.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
xiph theora -

References & Advisories (3)

https://bugzilla.redhat.com/show_bug.cgi?id=2455340
Issue Tracking Third Party Advisory
https://github.com/xiph/theora/issues/24
Exploit Issue Tracking Third Party Advisory

Bug Bounty Relevance

39 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.1 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS — Exploitation Probability

0.18%
Raw Score 0.001780
Percentile 7.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00178
2026-10-28
0.00178

Intelligence Sources

nvd ref →

External Links