CVE-2021-29468: Cygwin Git is a patch set for the git command line tool for the cygwin environment

Q: How do I fix CVE-2021-29468?

git: upgrade to newer than 2.31.1-1. Exact commands for each OS are on this page.

Q: Is CVE-2021-29468 being exploited?

CVE-2021-29468 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-29468 affect?

CVE-2021-29468 affects git. Severity is high (CVSS 8.8). Cygwin Git is a patch set for the git command line tool for the cygwin environment. A specially crafted repository that contains symbolic links as well as files with backslash characters in the file name may cause just-checked out code to b

This month

HIGH 8.8UPGRADE

CVE-2021-29468 is a high-severity flaw (CVSS 8.8) affecting git. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cygwin Git is a patch set for the git command line tool for the cygwin environment. A specially crafted repository that contains symbolic links as well as files with backslash characters in the file name may cause just-checked out code to be executed while checking out a repository using Git on Cygwin. The problem will be patched in the Cygwin Git v2.31.1-2 release. At time of writing, the vulnerability is present in the upstream Git source code;

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-20
Published	2021-04-29
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: cygwin

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-04-29 21:15 UTCPublished CVE record published
2026-06-17 03:47 UTCUpdated Record last modified

cygwin git UPGRADE

Affected: <= 2.31.1-1

Fixed in: newer than 2.31.1-1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy git || rpm -q git || git --version

2. UPGRADE to newer than 2.31.1-1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade git

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade git

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-29468?

git: upgrade to newer than 2.31.1-1. Exact commands for each OS are on this page.

Is CVE-2021-29468 being exploited?

CVE-2021-29468 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-29468 affect?

CVE-2021-29468 affects git. Severity is high (CVSS 8.8). Cygwin Git is a patch set for the git command line tool for the cygwin environment. A specially crafted repository that contains symbolic links as well as files with backslash characters in the file name may cause just-checked out code to b

How urgent is CVE-2021-29468?

Priority 48/100. High severity

Software pages

Git vulnerabilities

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References

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