What is CVE-2021-45297?

CVE-2021-45297 is a medium-severity vulnerability in Gpac, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2021-12-21.

How severe is CVE-2021-45297?

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

Vulnerability in Gpac

CVE-2021-45297

An infinite loop vulnerability exists in Gpac 1.0.1 in gf_get_bit_size.

Published 2021-12-21 · 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: 0.006 (47.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% 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: 0.006 · change: 0.000

Affected products

Gpac — versions 1.1.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

github.com/gpac/gpac/issues/1973 (Exploit, Third Party Advisory, Issue Tracking)
www.debian.org/security/2023/dsa-5411 (vendor-advisory)

Frequently asked questions

What is CVE-2021-45297?: CVE-2021-45297 is a medium-severity vulnerability in Gpac, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.5/10. Published 2021-12-21.
How severe is CVE-2021-45297?: Medium severity. CVSS v3 base score is 5.5 out of 10.