Medium 6.3Published Mar 15, 2026

CVE-2026-4185GPAC MP4Box swf_parse.c swf_def_bits_jpeg stack-based overflow

Updated under an hour ago (Oct 26, 2026, 3:50 AM ET)

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It affects n/a GPAC. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

A vulnerability was found in GPAC up to 2.5-DEV-rev2167-gcc9d617c0-master. This vulnerability affects the function swf_def_bits_jpeg of the file src/scene_manager/swf_parse.c of the component MP4Box. The manipulation of the argument szName results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. The patch is identified as 8961c74f87ae3fe2d3352e622f7730ca96d50cf1. A patch should be applied to remediate this issue.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Mar 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

n/a GPAC gpac:gpac	2.5-DEV-rev2167-gcc9d617c0-master	CNA record

References

https://vuldb.com/?id.351091vdb-entry, technical-description
https://vuldb.com/?ctiid.351091signature, permissions-required
https://vuldb.com/?submit.769840third-party-advisory
https://github.com/gpac/gpac/issues/3436issue-tracking
https://github.com/PeterXukt/test_pocs/blob/main/gpac/test.swfexploit
https://github.com/gpac/gpac/commit/8961c74f87ae3fe2d3352e622f7730ca96d50cf1patch
https://github.com/gpac/gpac/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.