CVE-2021-33364 json
Memory leak in the def_parent_box_new function in MP4Box in GPAC 1.0.1 allows attackers to read memory via a crafted file.
published 2021-09-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-20070
- 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 63%
- public exploits
- 0
- none known
Summary
Memory leak in the def_parent_box_new function in MP4Box in GPAC 1.0.1 allows attackers to read memory via a crafted file.
Patch / fix
- gpac Debian 11 1.0.1+dfsg1-4+deb11u2
debian advisories DEBIAN-CVE-2021-33364
- github.com/gpac/gpac@fe5155c commit
- github.com/gpac/gpac/issues/1783 advisory
Exploit prediction
1.00% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/gpac/gpac/issues/1783 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/fe5155cf047252d1c4cb91602048bfa682af0ea7
patch, third-party-advisory
-
github.com
/gpac/gpac/issues/1783
exploit, issue-tracking, patch, third-party-advisory
-
debian.org
/security/2023/dsa-5411
vendor-advisory
Sources
- CVE List CVE-2021-33364
- NVD CVE-2021-33364
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.