CVE-2025-66413

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

7.4 HighFix available

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).

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.32%Up 0.3 points since Mar 11, 2026

What each source reports

CVE List Score used 7.4

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

Record: CVE-2025-66413
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

EUVDEUVD-2025-208534 7.4

Record: EUVD-2025-208534
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Updated: 2026-11-02

NVD 7.4

Record: CVE-2025-66413
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness: CWE-200, CWE-307
Updated: 2026-11-02

OSV 7.4

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

Record: CVE-2025-66413
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSVOESA-2026-1660 7.4

git security update

Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency. Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.

Security Fix(es):

Record: OESA-2026-1660
CVSS 3.1: 7.4 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`git` openEuler:24.03-LTS	before 2.43.0-11.oe2403sp3	2.43.0-11.oe2403sp3
`git` openEuler:24.03-LTS-SP1	before 2.43.0-11.oe2403sp1	2.43.0-11.oe2403sp1
`git` openEuler:24.03-LTS-SP2	before 2.43.0-11.oe2403sp2	2.43.0-11.oe2403sp2
`git` openEuler:24.03-LTS-SP3	before 2.43.0-11.oe2403sp3	2.43.0-11.oe2403sp3
`git` openEuler:20.03-LTS-SP4	before 2.27.0-28.oe2003sp4	2.27.0-28.oe2003sp4
`git` openEuler:22.03-LTS-SP4	before 2.33.0-21.oe2203sp4	2.33.0-21.oe2203sp4

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-66413 is a high vulnerability (CVSS 7.4) in Git-for-windows Git, published March 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. Fixed in git 2.43.0-11.oe2403sp3.