Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD 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.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
6 versions affected across 2 products
CVE-2026-5673 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_inp… https://www.cve.org/CVERecord?id=CVE-2026-5673
Post summary
The post announces CVE-2026-5673 as a heap-based out-of-bounds read flaw in libtheora’s AVI parser, with no PoC, exploit, or patch details provided.
CVE-2026-5673 Heap-Based Out-of-Bounds Read in libtheora AVI Parser https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-5673
Post summary
A new CVE, CVE-2026-5673, has been released, detailing a heap-based out‑of‑bounds read in the libtheora AVI parser, with no information on PoC, exploit, or mitigations.
🚨*CVE* CVE-2026-5673 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_inp… https://www.cve.org/CVERecord?id=CVE-2026-5673 ----- Traducción: Se encontró una f… http://infoflow.cloud`
Post summary
A new heap-based out-of-bounds read vulnerability (CVE‑2026‑5673) in libtheora’s AVI parser has been disclosed; no PoC, exploit code, active exploitation, or patch is referenced.
6 of 6 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | redhat | enterprise_linux | 10.0 | - | - |
| OS | redhat | enterprise_linux | 6.0 | - | - |
| OS | redhat | enterprise_linux | 7.0 | - | - |
| OS | redhat | enterprise_linux | 8.0 | - | - |
| OS | redhat | enterprise_linux | 9.0 | - | - |
| App | xiph | theora | - | - | - |