Skip to main content
VulnerabilityPublished Updated

CVE-2025-55640: gpac

Affects gpacSource CVE Database V5

0

Not known to be exploited : upgrade to 2.4 when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity
Medium

Rated Medium by the CNA (mitre) · No CVSS score from NVD or the CNA

EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade gpac/gpac to 2.4.

Affected software

ProductAffectedFixed in
GitHubgpac/gpacpkg:github/gpac/gpacOther threatsAffected
  • <2.4
Fixed in
  • 2.4

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

A heap buffer overflow in the stbl_AddSize function (isomedia/stbl_write.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

References

Community reviews

Loading reviews…