CVE-2021-46848

Name: CVE-2021-46848
Creator: NVD / NIST
Published: 2022-10-24T14:15:49.973+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 2.06%

Last modified Jun 17, 2026

CVE-2021-46848 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. GNU Libtasn1 before 4.19.0 has an ETYPE_OK off-by-one array size check that affects asn1_encode_simple_der.. EPSS estimates a 2.06% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability

2.06%

78.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gnu	Libtasn1	< 4.19.0
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36
Fedoraproject	Fedora	37
Debian	Debian Linux	10.0

References

https://bugs.gentoo.org/866237Issue Tracking, Patch, Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5Patch, Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/issues/32Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00003.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
https://security.netapp.com/advisory/ntap-20221118-0006/Third Party Advisory
https://bugs.gentoo.org/866237Issue Tracking, Patch, Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5Patch, Third Party Advisory
https://gitlab.com/gnutls/libtasn1/-/issues/32Exploit, Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00003.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
https://security.netapp.com/advisory/ntap-20221118-0006/Third Party Advisory

Timeline

Published: Oct 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46848?

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

How severe is CVE-2021-46848?

CVE-2021-46848 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 2.06% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46848?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46848?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST