CVE-2021-33644
High
Published: 10 August 2022
Published
10 August 2022
Modified
03 November 2025
KEV Added
—
Patch
—
CVSS Score v3.1
8.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
EPSS Score
0.0022
45.4th percentile
Risk Priority
16
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-33644 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Openatom Openeuler. Its CVSS base score is 8.1 (High).
Operationally, ranked at the 45.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-20321
Vulnerability details
An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longname, causing an out-of-bounds read.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
feep
libtar
≤ 1.2.21
openatom
openeuler
20.03, 22.03
fedoraproject
fedora
35, 36, 37
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.