Memory leak in the gf_isom_oinf_read_entry function in MP4Box in GPAC 1.0.1 allows attackers to read memory via a crafted file.

published 2021-09-13 5y ago modified 2026-06-17 4mo ago also EUVD-2021-20072

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

Patch / fix

distros 1 links 2

gpac Debian 11 1.0.1+dfsg1-4+deb11u2

debian advisories DEBIAN-CVE-2021-33366

github.com/gpac/gpac@0a85029 commit
github.com/gpac/gpac/issues/1785 advisory

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Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/gpac/gpac/issues/1785 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-401 Missing Release of Memory after Effective Lifetime

References

github.com /gpac/gpac/commit/0a85029d694f992f3631e2f249e4999daee15cbf
patch, third-party-advisory
github.com /gpac/gpac/issues/1785
exploit, issue-tracking, patch, third-party-advisory
debian.org /security/2023/dsa-5411
vendor-advisory

Sources

CVE List CVE-2021-33366
NVD CVE-2021-33366

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