TI-2025-40849 Aliases CVE-2025-66413

Git for Windows leaks NTLM hash when cloning from an attacker-controlled server

HIGH 66CWE-200Published 2026-03-10 · Updated 2026-03-11

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Information disclosure, Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200 and CWE-307.

Summary

Git for Windows is the Windows port of Git. Prior to 2.53.0(2), it is possible to obtain a user's NTLM hash by tricking them into cloning from a malicious server. Since NTLM hashing is weak, it is possible for the attacker to brute-force the user's account name and password. This vulnerability is fixed in 2.53.0(2).

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00319 25th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed git (git-for-windows): 2.53.0(2)

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
git-for-windows	git	before 2.53.0(2)	2.53.0(2)	Patch available	CNA

git Vendorgit-for-windows Affected before 2.53.0(2) Fixed in 2.53.0(2) Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gitforwindows:git::::::::	up to 2.53.0	Vulnerable	git-for-windows

cpe:2.3:a:gitforwindows:git:*:*:*:*:*:*:*:* Versions up to 2.53.0 Vulnerable ·git-for-windows

Remediation

Fix · CNA git (git-for-windows) Fixed in 2.53.0(2)

Timeline

2026-10-02 Threatist record created from CVE-2025-66413

References

Exploit 1

https://github.com/git-for-windows/git/security/advisories/GHSA-hv9c-4jm9-jh3x

Other 1

https://github.com/git-for-windows/git/releases/tag/v2.53.0.windows.2

TI-2018-07996 In Git before 2.13.7, 2.14.x before 2.14.4, 2.15.x before 2.15.2, 2.16.x before 2.16.4… CVSS 3.0HIGH 7.8
TI-2022-13057 Git for Windows' installer can be tricked into executing an untrusted binary CVSS 3.1HIGH 8.2
TI-2021-21060 In Git for windows through 2.34.1 when using git pull to update the local warehouse, git.cmd can be run directly. CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences