CVE-2024-32021Public exploit

Arbitrary file hardlinking via symlink race

Published May 14, 2024 · Updated Nov 4, 2025

Race condition in Git allows local users to hardlink arbitrary user-readable files into a clone's objects directory. During optimized filesystem cloning, Git checks that a source object is not a symlink and then calls a hard-link operation that follows symlinks, leaving a time-of-check/time-of-use window. Exploitation requires the victim to clone an attacker-controlled local repository on the same filesystem while the attacker replaces a checked object with a symlink; the resulting repository gains a hard link to the chosen readable file.

CVSS severity3.9
Low
EPSS probability1.02%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Git allows local users to hardlink arbitrary user-readable files into a clone's objects directory. During optimized filesystem cloning, Git checks that a source object is not a symlink and then calls a hard-link operation that follows symlinks, leaving a time-of-check/time-of-use window. Exploitation requires the victim to clone an attacker-controlled local repository on the same filesystem while the attacker replaces a checked object with a symlink; the resulting repository gains a hard link to the chosen readable file.

The record

CVE
CVE-2024-32021
Published
May 14, 2024
Updated
Nov 4, 2025
Vendor
Git
Product
Git
Classifications
CWE-547, T1565.001
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. May 14, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.39.4
  2. Affected versionversion=< 2.39.4
  3. Affected versionversion=>= 2.40.0, < 2.40.2
  4. Affected versionversion=2.40.0 <2.40.2
  5. Affected versionversion== 2.41.0
  6. Affected versionversion=2.41.0 <2.41.1
  7. Affected versionversion=>= 2.42.0, < 2.42.2
  8. Affected versionversion=2.42.0 <2.42.2
  9. Affected versionversion=>= 2.43.0, < 2.43.4
  10. Affected versionversion=2.43.0 <2.43.4
  11. Affected versionversion== 2.44.0
  12. Affected versionversion=2.44.0 <2.44.1
  13. Affected versionversion== 2.45.0
  14. Affected versionversion=2.45.0 <2.45.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Git · Gitversion=0 <2.39.4; version=< 2.39.4; version=>= 2.40.0, < 2.40.2; version=2.40.0 <2.40.2; version== 2.41.0; version=2.41.0 <2.41.1; version=>= 2.42.0, < 2.42.2; version=2.42.0 <2.42.2; version=>= 2.43.0, < 2.43.4; version=2.43.0 <2.43.4; version== 2.44.0; version=2.44.0 <2.44.1; version== 2.45.0; version=2.45.0 <2.45.1

Published CVSS scores

3.9GitHub, Inc.CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:L
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-547Use of Hard-coded, Security-relevant Constants
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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