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

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Summary

CVECVE-2025-66413
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-10 21:16:40 UTC
Updated2026-04-21 14:08:46 UTC
DescriptionGit 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).

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS: 0.000360000 probability, percentile 0.108120000 (date 2026-04-21)

Problem Types: CWE-200 | CWE-307 | CWE-200 CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
3.1[email protected]Secondary7.4HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
3.1CNADECLARED7.4HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Gitforwindows Git All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Git-for-windows Git affected < 2.53.0(2) Not specified

References

ReferenceSourceLinkTags
github.com/git-for-windows/git/releases/tag/v2.53.0.windows.2 [email protected] github.com Release Notes
github.com/git-for-windows/git/security/advisories/GHSA-hv9c-4jm9-jh3x [email protected] github.com Exploit, Vendor Advisory
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