What is CVE-2026-5236?

CVE-2026-5236 is a medium-severity vulnerability in Axiomatic Bento4, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-03-31.

How severe is CVE-2026-5236?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Buffer overflow in Axiomatic Bento4

CVE-2026-5236

A vulnerability was identified in Axiomatic Bento4 up to 1.6.0-641. Affected is the function AP4_BitReader::SkipBits of the file Ap4Dac4Atom.cpp of the component DSI v1 Parser. Such manipulation of the argument n_presentations leads to hea…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Axiomatic Bento4 — versions 1.6.0-641

Weakness classification (CWE)

References

VDB-354387 | Axiomatic Bento4 DSI v1 Ap4Dac4Atom.cpp SkipBits heap-based overflow (technical-description, vdb-entry)
VDB-354387 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #780473 | Bento4 <=1.6.0-641 Memory Corruption (third-party-advisory)
cna@vuldb.com (issue-tracking)
cna@vuldb.com (issue-tracking, exploit)

Frequently asked questions

What is CVE-2026-5236?: CVE-2026-5236 is a medium-severity vulnerability in Axiomatic Bento4, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2026-03-31.
How severe is CVE-2026-5236?: Medium severity. CVSS v3 base score is 5.3 out of 10.