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
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.2%CVSS: 9.1Exploit: None knownExposed services: Not assessed

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
9.1CRITICALmedium confidence
EG Risk
57
EG Risk 57/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
2.2%
EPSS %ILE
82nd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 24, 2022

Last Modified

May 7, 2025

Advisory Details (9)

Auto-updated Aug 2, 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/
genericMentions a patch (unverified)

[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

Vendor Advisories for CVE-2021-46848(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFix (by version range) / 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.

Affected Packages

(16 across 16 ecosystems)
Alpine:v3.14(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.17.0-r1: fixed in 4.17.0-r1
—
Alpine:v3.15(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.18.0-r1: fixed in 4.18.0-r1
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.18.0-r1: fixed in 4.18.0-r1
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1—
  • every version up to 4.19-r0: fixed in 4.19-r0
—
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1-64.13-3
  • every version up to 4.13-3+deb10u1: fixed in 4.13-3+deb10u1
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1-64.16.0-2
  • every version up to 4.16.0-2+deb11u1: fixed in 4.16.0-2+deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1-6—
  • every version up to 4.19.0-2: fixed in 4.19.0-2
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1-6—
  • every version up to 4.19.0-2: fixed in 4.19.0-2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libtasn1-6—
  • every version up to 4.19.0-2: fixed in 4.19.0-2
—

Weakness Classification(2)

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

Additional Vendor Advisories

(6)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× 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 179 total refreshes for this CVE.

  1. 2026-10-09 20:04 UTCEPSS rescore
  2. 2026-10-08 16:40 UTCEPSS rescore
  3. 2026-10-07 23:45 UTCEPSS rescore
  4. 2026-10-06 15:14 UTCEPSS rescore
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  6. 2026-10-03 14:22 UTCEPSS rescore
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  8. 2026-10-02 16:23 UTCEPSS rescore
  9. 2026-09-30 15:45 UTCEG score recompute
  10. 2026-09-30 15:00 UTCEPSS rescore
  11. 2026-09-29 15:15 UTCEPSS rescore
  12. 2026-09-28 13:47 UTCEPSS rescore
  13. 2026-09-26 15:54 UTCEPSS rescore
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  15. 2026-09-24 14:00 UTCEPSS rescore
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  17. 2026-09-24 07:19 UTCOSV refresh
  18. 2026-09-23 13:45 UTCEPSS rescore
  19. 2026-09-22 14:44 UTCEPSS rescore
  20. 2026-09-21 20:28 UTCEPSS rescore
  21. 2026-09-20 20:13 UTCEPSS rescore
  22. 2026-09-19 15:38 UTCEPSS rescore
  23. 2026-09-18 19:24 UTCEPSS rescore
  24. 2026-09-17 19:23 UTCEPSS rescore
  25. 2026-09-16 14:05 UTCEPSS rescore
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  1. 2026-09-16 14:05 UTCEPSS rescore
  2. 2026-09-15 03:06 UTCEPSS rescore
  3. 2026-09-12 14:57 UTCEPSS rescore
  4. 2026-09-11 14:49 UTCEPSS rescore
  5. 2026-09-11 09:33 UTCEPSS rescore
  6. 2026-09-08 21:57 UTCEPSS rescore
  7. 2026-09-07 15:58 UTCEPSS rescore
  8. 2026-09-06 13:45 UTCEPSS rescore
  9. 2026-09-05 15:25 UTCEPSS rescore
  10. 2026-09-05 00:59 UTCOSV refresh
  11. 2026-09-04 13:57 UTCEPSS rescore
  12. 2026-09-04 05:03 UTCEPSS rescore
  13. 2026-09-02 14:09 UTCEPSS rescore
  14. 2026-09-01 13:51 UTCEPSS rescore
  15. 2026-08-30 19:14 UTCEPSS rescore
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  17. 2026-08-28 21:38 UTCEPSS rescore
  18. 2026-08-27 14:22 UTCEPSS rescore
  19. 2026-08-26 14:43 UTCEPSS rescore
  20. 2026-08-25 13:46 UTCEPSS rescore
  21. 2026-08-24 14:13 UTCEPSS rescore
  22. 2026-08-21 23:46 UTCEPSS rescore
  23. 2026-08-20 22:52 UTCEPSS rescore
  24. 2026-08-19 17:01 UTCEPSS rescore
  25. 2026-08-18 13:45 UTCEPSS rescore
  26. 2026-08-18 12:02 UTCOSV refresh
  27. 2026-08-17 13:44 UTCEPSS rescore
  28. 2026-08-16 14:53 UTCEPSS rescore
  29. 2026-08-16 02:11 UTCEPSS rescore
  30. 2026-08-15 01:27 UTCEPSS rescore
  31. 2026-08-13 21:57 UTCEPSS rescore
  32. 2026-08-12 13:48 UTCEPSS rescore
  33. 2026-08-11 13:38 UTCEPSS rescore
  34. 2026-08-09 13:44 UTCEPSS rescore
  35. 2026-08-08 16:34 UTCEPSS rescore
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  37. 2026-08-06 13:44 UTCEPSS rescore
  38. 2026-08-05 19:15 UTCEPSS rescore
  39. 2026-08-04 15:06 UTCEPSS rescore
  40. 2026-08-04 10:34 UTCEPSS rescore
  41. 2026-08-03 10:33 UTCEPSS rescore
  42. 2026-08-03 07:27 UTCOSV refresh
  43. 2026-08-02 02:24 UTCEPSS rescore
  44. 2026-08-01 04:13 UTCEPSS rescore
  45. 2026-07-30 16:25 UTCEPSS rescore
  46. 2026-07-30 01:28 UTCEPSS rescore
  47. 2026-07-28 15:33 UTCEPSS rescore
  48. 2026-07-26 14:52 UTCEPSS rescore
  49. 2026-07-25 14:15 UTCEPSS rescore
  50. 2026-07-24 14:15 UTCEPSS rescore
  51. 2026-07-24 14:15 UTCEPSS rescore
  52. 2026-07-23 14:16 UTCEPSS rescore
  53. 2026-07-23 02:06 UTCEG score recompute
  54. 2026-07-22 22:52 UTCEG score recompute
  55. 2026-07-22 14:06 UTCEPSS rescore
  56. 2026-07-21 15:22 UTCEPSS rescore
  57. 2026-07-21 15:22 UTCEPSS rescore
  58. 2026-07-20 17:05 UTCEPSS rescore
  59. 2026-07-19 14:29 UTCEPSS rescore
  60. 2026-07-19 02:27 UTCEPSS rescore
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  62. 2026-07-18 10:02 UTCEPSS rescore
  63. 2026-07-16 17:19 UTCOSV refresh
  64. 2026-07-16 17:00 UTCEPSS rescore
  65. 2026-07-16 17:00 UTCEPSS rescore
  66. 2026-07-15 16:55 UTCEPSS rescore
  67. 2026-07-15 01:58 UTCEPSS rescore
  68. 2026-07-15 01:58 UTCEPSS rescore
  69. 2026-07-13 22:27 UTCEPSS rescore
  70. 2026-07-13 06:11 UTCEPSS rescore
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  72. 2026-07-12 05:44 UTCEPSS rescore
  73. 2026-07-11 08:25 UTCEPSS rescore
  74. 2026-07-09 19:07 UTCEPSS rescore
  75. 2026-07-09 19:07 UTCEPSS rescore

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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 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 2.2% probability of exploitation in the next 30 days (82nd percentile of EPSS-scored CVEs).
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?
A fix for CVE-2021-46848 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2021-46848 are linked in the Vendor Advisories panel on this page.

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