CVE-2025-66413 Git for Windows leaks NTLM hash when cloning from an attacker-controlled server
Git for Windows leaks NTLM hashes when cloning from malicious servers, allowing attackers to brute-force credentials and take over accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-66413?
CVE-2025-66413 is a high-severity vulnerability in git-for-windows git, published on 10 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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).
Which versions are affected by CVE-2025-66413?
It affects 1 product.
Products include Gitforwindows Git.
How do I fix CVE-2025-66413?
Upgrade to a fixed version.
Is CVE-2025-66413 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66413 exists.
Other vulnerabilities in git-for-windows git
Sources
Also known as GHSA-hv9c-4jm9-jh3x, OESA-2026-1660.