CVE-2021-46848 — Off-by-one Error in Libtasn1

CWE-193 — Off-by-one ErrorCWE-125 — Out-of-bounds Read14 documents9 sources
Severity
9.1CRITICALNVD
EPSS
0.5%
top 33.98%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
GNU Libtasn1Debian LinuxFedoraproject Fedora
Timeline
PublishedOct 24
Latest updateFeb 10

Description

GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HExploitability: 3.9 | Impact: 5.2

Affected Packages1 packages

▶NVDgnu/libtasn1< 4.19.0

Also affects: Debian Linux 10.0, Fedora 35, 36, 37

Patches

Patch: bugs.gentoo.org ↗Patch: gitlab.com ↗Patch: bugs.gentoo.org ↗

🔴Vulnerability Details

5
OSV
libtasn1-6 vulnerabilities↗2026-02-10
▶
OSV
libtasn1-6 vulnerabilities↗2026-01-12
▶
OSV
CVE-2021-46848: GNU Libtasn1 before 4↗2022-10-24
▶
GHSA
GHSA-6468-68pw-9chw: GNU Libtasn1 before 4↗2022-10-24
▶
CVEList
CVE-2021-46848: GNU Libtasn1 before 4↗2022-10-24
▶

📋Vendor Advisories

8
Ubuntu
Libtasn1 vulnerabilities↗2026-02-10
▶
Ubuntu
Libtasn1 vulnerabilities↗2026-01-12
▶
Oracle
Oracle Oracle Communications Risk Matrix: Install/Upgrade (Libtasn1) — CVE-2021-46848↗2024-01-15
▶
Oracle
Oracle Oracle Communications Risk Matrix: Policy (GNU Libtasn1) — CVE-2021-46848↗2023-04-15
▶
Ubuntu
Libtasn1 vulnerability↗2022-10-31
▶
CVE-2021-46848 — Off-by-one Error in GNU Libtasn1 | cvebase