CVE-2013-20001

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-05. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.1%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

An issue was discovered in OpenZFS through 2.0.3. When an NFS share is exported to IPv6 addresses via the sharenfs feature, there is a silent failure to parse the IPv6 address data, and access is allowed to everyone. IPv6 restrictions from the configuration are not applied.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
39
EG Risk 39/100CISA 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
Severity75% × 45%
Exploitation2% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or 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
2.1%
EPSS %ILE
80th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or 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 (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

February 12, 2021

Last Modified

November 3, 2025

Advisory Details (4)

Auto-updated Sep 29, 2026
Patch available.
genericMentions a patch (unverified)

[SECURITY] [DLA 4114-1] zfs-linux security update

https://lists.debian.org/debian-lts-announce/2025/04/msg00009.html
genericMentions a patch (unverified)

[SECURITY] [DLA 3766-1] zfs-linux security update

https://lists.debian.org/debian-lts-announce/2024/03/msg00019.html
generic

Releases · openzfs/zfs · GitHub

https://github.com/openzfs/zfs/releases
generic

sharenfs and IPv6 on Ubuntu 12.04 · Issue #1894 · openzfs/zfs · GitHub

https://github.com/openzfs/zfs/issues/1894#issuecomment-30693652

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuzfsutils-linux (2.1.9-2ubuntu1.2) @ lunar2026-05-26ubuntu

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

(5 across 5 ecosystems)
Debian:10(1)
PackageVulnerable rangeFix by version rangeDependents
zfs-linux0.6.5.10-1 ... 0.7.9-3~bpo9+1 (53 versions)
  • every version up to 0.7.12-2+deb10u3: fixed in 0.7.12-2+deb10u3
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
zfs-linux0.6.5.10-1 ... 2.0.3-9~bpo10+1 (106 versions)
  • every version up to 2.0.3-9+deb11u2: fixed in 2.0.3-9+deb11u2
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
zfs-linux0.6.5.10-1 ... 2.1.9-4 (135 versions)
  • every version up to 2.1.11-1+deb12u1: fixed in 2.1.11-1+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
zfs-linux0.6.5.10-1 ... 2.2.2-1~exp1 (151 versions)
  • every version up to 2.2.2-1: fixed in 2.2.2-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
zfs-linux0.6.5.10-1 ... 2.2.2-1~exp1 (151 versions)
  • every version up to 2.2.2-1: fixed in 2.2.2-1
—

All Vendor Advisories

(1)

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 4× in last 7d / 14× 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 135 total refreshes for this CVE.

  1. 2026-10-06 15:10 UTCEPSS rescore
  2. 2026-10-05 17:38 UTCEPSS rescore
  3. 2026-10-04 23:16 UTCEPSS rescore
  4. 2026-09-30 14:58 UTCEPSS rescore
  5. 2026-09-29 20:14 UTCEG score recompute
  6. 2026-09-27 13:39 UTCEPSS rescore
  7. 2026-09-26 15:52 UTCEPSS rescore
  8. 2026-09-26 10:25 UTCOSV refresh
  9. 2026-09-24 13:57 UTCEPSS rescore
  10. 2026-09-18 19:21 UTCEPSS rescore
  11. 2026-09-15 03:04 UTCEPSS rescore
  12. 2026-09-12 14:55 UTCEPSS rescore
  13. 2026-09-11 09:30 UTCEPSS rescore
  14. 2026-09-07 15:56 UTCEPSS rescore
  15. 2026-09-06 22:31 UTCOSV refresh
  16. 2026-09-06 13:42 UTCEPSS rescore
  17. 2026-09-05 15:22 UTCEPSS rescore
  18. 2026-09-04 13:55 UTCEPSS rescore
  19. 2026-09-02 14:06 UTCEPSS rescore
  20. 2026-09-01 13:47 UTCEPSS rescore
  21. 2026-08-27 14:20 UTCEPSS rescore
  22. 2026-08-26 14:40 UTCEPSS rescore
  23. 2026-08-25 13:43 UTCEPSS rescore
  24. 2026-08-24 07:23 UTCEPSS rescore
  25. 2026-08-21 23:44 UTCEPSS rescore
Show 75 more
  1. 2026-08-20 22:50 UTCEPSS rescore
  2. 2026-08-20 08:31 UTCOSV refresh
  3. 2026-08-19 16:59 UTCEPSS rescore
  4. 2026-08-18 13:42 UTCEPSS rescore
  5. 2026-08-16 02:09 UTCEPSS rescore
  6. 2026-08-15 01:25 UTCEPSS rescore
  7. 2026-08-12 13:45 UTCEPSS rescore
  8. 2026-08-09 13:42 UTCEPSS rescore
  9. 2026-08-08 16:31 UTCEPSS rescore
  10. 2026-08-07 16:21 UTCEPSS rescore
  11. 2026-08-06 13:42 UTCEPSS rescore
  12. 2026-08-05 19:12 UTCEPSS rescore
  13. 2026-08-05 03:41 UTCOSV refresh
  14. 2026-08-04 15:04 UTCEPSS rescore
  15. 2026-08-02 02:22 UTCEPSS rescore
  16. 2026-07-30 01:26 UTCEPSS rescore
  17. 2026-07-28 15:31 UTCEPSS rescore
  18. 2026-07-25 14:12 UTCEPSS rescore
  19. 2026-07-23 14:14 UTCEPSS rescore
  20. 2026-07-23 01:09 UTCEG score recompute
  21. 2026-07-23 00:13 UTCEG score recompute
  22. 2026-07-22 21:51 UTCEG score recompute
  23. 2026-07-22 14:04 UTCEPSS rescore
  24. 2026-07-22 14:04 UTCEPSS rescore
  25. 2026-07-21 15:21 UTCEPSS rescore
  26. 2026-07-20 17:03 UTCEPSS rescore
  27. 2026-07-20 17:03 UTCEPSS rescore
  28. 2026-07-19 14:27 UTCEPSS rescore
  29. 2026-07-19 14:27 UTCEPSS rescore
  30. 2026-07-19 02:25 UTCEPSS rescore
  31. 2026-07-19 02:25 UTCEPSS rescore
  32. 2026-07-19 01:59 UTCOSV refresh
  33. 2026-07-18 10:00 UTCEPSS rescore
  34. 2026-07-16 16:58 UTCEPSS rescore
  35. 2026-07-15 16:54 UTCEPSS rescore
  36. 2026-07-15 16:54 UTCEPSS rescore
  37. 2026-07-15 01:56 UTCEPSS rescore
  38. 2026-07-13 22:26 UTCEPSS rescore
  39. 2026-07-13 06:08 UTCEPSS rescore
  40. 2026-07-11 08:23 UTCEPSS rescore
  41. 2026-07-09 19:05 UTCEPSS rescore
  42. 2026-07-08 15:10 UTCEPSS rescore
  43. 2026-07-06 02:19 UTCEPSS rescore
  44. 2026-07-06 02:19 UTCEPSS rescore
  45. 2026-07-05 02:26 UTCEPSS rescore
  46. 2026-07-04 06:27 UTCEPSS rescore
  47. 2026-07-01 15:02 UTCEPSS rescore
  48. 2026-07-01 08:48 UTCOSV refresh
  49. 2026-06-30 23:19 UTCEPSS rescore
  50. 2026-06-30 23:19 UTCEPSS rescore
  51. 2026-06-29 14:02 UTCEPSS rescore
  52. 2026-06-28 14:03 UTCEPSS rescore
  53. 2026-06-28 04:53 UTCEPSS rescore
  54. 2026-06-28 04:53 UTCEPSS rescore
  55. 2026-06-27 03:05 UTCEPSS rescore
  56. 2026-06-25 13:46 UTCEPSS rescore
  57. 2026-06-24 14:02 UTCEPSS rescore
  58. 2026-06-24 14:02 UTCEPSS rescore
  59. 2026-06-23 21:30 UTCEPSS rescore
  60. 2026-06-22 14:22 UTCEPSS rescore
  61. 2026-06-22 14:22 UTCEPSS rescore
  62. 2026-06-21 14:53 UTCEPSS rescore
  63. 2026-06-21 01:57 UTCEPSS rescore
  64. 2026-06-21 01:56 UTCEPSS rescore
  65. 2026-06-19 19:23 UTCEPSS rescore
  66. 2026-06-19 19:22 UTCEPSS rescore
  67. 2026-06-18 17:49 UTCEPSS rescore
  68. 2026-06-18 17:49 UTCEPSS rescore
  69. 2026-06-17 17:49 UTCEPSS rescore
  70. 2026-06-17 17:49 UTCEPSS rescore
  71. 2026-06-16 17:49 UTCEPSS rescore
  72. 2026-06-16 17:49 UTCEPSS rescore
  73. 2026-06-15 17:44 UTCEPSS rescore
  74. 2026-06-14 23:14 UTCEPSS rescore
  75. 2026-06-13 22:57 UTCEPSS rescore

Related CVEs(same product)

Same product

2 shown

Debian:10:zfs-linux · Debian:12:zfs-linux

Frequently asked(5)

What is CVE-2013-20001?
CVE-2013-20001 is a high vulnerability published on February 12, 2021. An issue was discovered in OpenZFS through 2.0.3. When an NFS share is exported to IPv6 addresses via the sharenfs feature, there is a silent failure to parse the IPv6 address data, and access is allowed to everyone. IPv6 restrictions from the configuration are not applied.
When was CVE-2013-20001 disclosed?
CVE-2013-20001 was first published on February 12, 2021, with the most recent update on November 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-20001 actively exploited?
CVE-2013-20001 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% probability of exploitation in the next 30 days (80th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2013-20001?
CVE-2013-20001 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2013-20001?
A fix for CVE-2013-20001 is available: update to the fixed version the vendor names in its advisory.

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