CVE-2021-46848
CriticalPublic PoC
Published: 24 October 2022
Published
24 October 2022
Modified
07 May 2025
KEV Added
—
Patch
—
CVSS Score v3.1
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS Score
0.0041
61.8th percentile
Risk Priority
18
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-46848 is a critical-severity Off-by-one Error (CWE-193) vulnerability in Fedoraproject Fedora. Its CVSS base score is 9.1 (Critical).
Operationally, ranked in the top 38.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-33503
Vulnerability details
GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
gnu
libtasn1
≤ 4.19.0
fedoraproject
fedora
35, 36, 37
debian
debian linux
10.0
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.