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CVE-2020-12279

32
FAUCET Score

CVE-2020-12279 is a critical vulnerability affecting libgit2 versions prior to 0.28.4 and 0.9x prior to 0.99.0, specifically impacting Debian Linux distributions. The flaw stems from improper handling of NTFS short names during repository cloning, which can lead to remote code execution. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a network attack vector, low attack complexity, and high potential for confidentiality, integrity, and availability compromise. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.28.4CPE matchmatch criteria
cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.09%
Probability of exploitation in next 30 days
EPSS Percentile
91.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0509 is in the 86th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libgit2
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libgit2

Vendor Advisories (1)

redhatCVE-2020-12279Low

libgit2: NTFS protections inactive when running Git in the Windows Subsystem for Linux

Sep 18, 2019

References

github.com / git/git/security/advisories/GHSA-589j-mmg9-733v
PatchThird Party Advisory
github.com / libgit2/libgit2/commit/64c612cc3e25eff5fb02c59ef5a66ba7a14751e4
PatchThird Party Advisory
github.com / libgit2/libgit2/releases/tag/v0.28.4
Release NotesThird Party Advisory
github.com / libgit2/libgit2/releases/tag/v0.99.0
Release NotesThird Party Advisory
lists.debian.org / debian-lts-announce/2022/03/msg00031.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2023/02/msg00034.html