What is CVE-2021-40608?

CVE-2021-40608 is a medium-severity vulnerability in Gpac, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2022-06-28.

How severe is CVE-2021-40608?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Gpac

CVE-2021-40608

The gf_hinter_track_finalize function in GPAC 1.0.1 allows attackers to cause a denial of service via a crafted file in the MP4Box command.

Published 2022-06-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000

Affected products

Gpac

Weakness classification (CWE)

CWE-908 — Use of Uninitialized Resource

References

github.com/gpac/gpac/issues/1883 (Exploit, Patch, Third Party Advisory, Issue Tracking)
www.debian.org/security/2023/dsa-5411 (vendor-advisory)

Frequently asked questions

What is CVE-2021-40608?: CVE-2021-40608 is a medium-severity vulnerability in Gpac, classified under Use of Uninitialized Resource. CVSS score: 5.5/10. Published 2022-06-28.
How severe is CVE-2021-40608?: Medium severity. CVSS v3 base score is 5.5 out of 10.