What is CVE-2021-44926?

CVE-2021-44926 is a medium-severity vulnerability in Gpac, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2021-12-21.

How severe is CVE-2021-44926?

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

NULL pointer dereference in Gpac

CVE-2021-44926

A null pointer dereference vulnerability exists in gpac 1.1.0-DEV in the gf_node_get_tag function, which causes a segmentation fault and application crash.

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 (47.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% 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-476 — NULL Pointer Dereference

References

github.com/gpac/gpac/issues/1961 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-44926?: CVE-2021-44926 is a medium-severity vulnerability in Gpac, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2021-12-21.
How severe is CVE-2021-44926?: Medium severity. CVSS v3 base score is 5.5 out of 10.