CVE-2021-46848

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2022-10-24. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.1Exploit: NoneExposed: 0

A fix is available — apply it.

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

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation2% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
79.3%
KEV
Not listed

Published

October 24, 2022

Last Modified

May 7, 2025

Advisory Details (9)

Auto-updated Jul 22, 2026
Patch available.
generic

866237 – (CVE-2021-46848) <dev-libs/libtasn1-4.19.0: Out of bounds read

https://bugs.gentoo.org/866237
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20221118-0006/
generic

[SECURITY] Fedora 37 Update: mingw-libtasn1-4.19.0-1.fc37 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V5LWOGF7QRMNFRUCZY6TDYQJVFI6MOQ2/
generic

[SECURITY] Fedora 35 Update: mingw-libtasn1-4.19.0-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGO7XST4EIJGX4B2ITZCYSWM24534BSU/
generic

[SECURITY] Fedora 36 Update: libtasn1-4.19.0-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ECM2ELTVRYV4BZ5L5GMIRQE27RFHPAQ6/
generic

[SECURITY] Fedora 36 Update: mingw-libtasn1-4.19.0-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AV4SHDJF2XLB4CUPTBPQQ6CLGZ5LKXPZ/
generic Patch Available

[SECURITY] [DLA 3263-1] libtasn1-6 security update

https://lists.debian.org/debian-lts-announce/2023/01/msg00003.html
generic

Out-of-bound access in ETYPE_OK (#32) · Issues · gnutls / libtasn1 · GitLab

https://gitlab.com/gnutls/libtasn1/-/issues/32
generic

Fix ETYPE_OK off by one array size check. Closes: #32. (44a700d2) · Commits · gnutls / libtasn1 · GitLab

https://gitlab.com/gnutls/libtasn1/-/commit/44a700d2051a666235748970c2df047ff207aeb5

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibtasn1-6 (4.7-3ubuntu0.16.04.3+esm3) @ xenial2026-05-25ubuntu
ubuntulibtasn1-doc (4.7-3ubuntu0.16.04.3+esm4) @ xenial2026-05-25ubuntu
ubuntulibtasn1-doc (4.20.0-2ubuntu0.25.04.1) @ plucky2026-05-25ubuntu
redhatlibtasn1-0:4.13-3.el8_6.12024-01-25redhat
redhatlibtasn1-0:4.16.0-8.el9_12023-01-23redhat
redhatlibtasn1-0:4.13-4.el8_72023-01-12redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-23 02:06 UTCEG score recompute
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2021-46848?
CVE-2021-46848 is a critical vulnerability published on October 24, 2022. GNU Libtasn1 before 4.19.0 has an ETYPEOK off-by-one array size check that affects asn1encodesimpleder.
When was CVE-2021-46848 disclosed?
CVE-2021-46848 was first published in the National Vulnerability Database on October 24, 2022, with the most recent update on May 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-46848 actively exploited?
CVE-2021-46848 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 79.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-46848?
CVE-2021-46848 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2021-46848?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-46848, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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