CVE-2020-12279

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. checkout.c mishandles equivalent filenames that exist because of NTFS short names. This may allow remote code execution when cloning a repository. This issue is similar to CVE-2019-1353.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: 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
Severity98% × 45%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
91%
KEV
Not listed

Published

April 27, 2020

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated Jun 26, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

libgit2 v0.99.0

Patch available: libgit2/libgit2 v0.99.0

https://github.com/libgit2/libgit2/releases/tag/v0.99.0
github_release Patch Available

libgit2 v0.28.4

Patch available: libgit2/libgit2 v0.28.4

https://github.com/libgit2/libgit2/releases/tag/v0.28.4
github_commit Patch Available

commit 64c612cc3e25 (libgit2/libgit2)

Patch available: libgit2/libgit2 v1.4.2 (contains commit 64c612cc3e25)

https://github.com/libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4
github Patch Available

Git needs NTFS-related protections outside of Git for Windows · Advisory · git/git · GitHub

https://github.com/git/git/security/advisories/GHSA-589j-mmg9-733v
generic Patch Available

[SECURITY] [DLA 3340-1] libgit2 security update

https://lists.debian.org/debian-lts-announce/2023/02/msg00034.html
generic Patch Available

[SECURITY] [DLA 2936-1] libgit2 security update

https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibgit2-fixtures (1.1.0+dfsg.1-4.1ubuntu0.1) @ jammy2026-05-27ubuntu

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

(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 10× in last 7d / 42× 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 105 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2020-12279?
CVE-2020-12279 is a critical vulnerability published on April 27, 2020. An issue was discovered in libgit2 before 0.28.4 and 0.9x before 0.99.0. checkout.c mishandles equivalent filenames that exist because of NTFS short names. This may allow remote code execution when cloning a repository. This issue is similar to CVE-2019-1353.
When was CVE-2020-12279 disclosed?
CVE-2020-12279 was first published in the National Vulnerability Database on April 27, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-12279 actively exploited?
CVE-2020-12279 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 8.5% of all scored CVEs.
What is the CVSS score of CVE-2020-12279?
CVE-2020-12279 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-12279?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-12279, 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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