CVE-2025-21377
NTLM Hash Disclosure Spoofing Vulnerability
6.5 Medium
NTLM Hash Disclosure Spoofing Vulnerability
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
39.9%Up 39.8 points since Feb 12, 2025
What each source reports
CVE List Score used
NTLM Hash Disclosure Spoofing Vulnerability
NTLM Hash Disclosure Spoofing Vulnerability
- Record
CVE-2025-21377- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C - Weakness
- CWE-73
- Updated
- 2026-11-02
EUVDEUVD-2025-2440
NTLM Hash Disclosure Spoofing Vulnerability
- Record
EUVD-2025-2440- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mhwv-rjc9-g3g8
NTLM Hash Disclosure Spoofing Vulnerability
NTLM Hash Disclosure Spoofing Vulnerability
- Record
GHSA-mhwv-rjc9-g3g8- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-73
- Updated
- 2026-11-02
NVD
NTLM Hash Disclosure Spoofing Vulnerability
- Record
CVE-2025-21377- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Weakness
- CWE-73
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1507
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 22h2
- microsoft windows 11 version 22h3
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows server 2008 r2 service pack 1
- microsoft windows server 2008 r2 service pack 1 (server core installation)
- microsoft windows server 2008 service pack 2
Show 23 moreShow less
- microsoft windows server 2008 service pack 2 (server core installation)
- microsoft windows server 2012
- microsoft windows server 2012 (server core installation)
- microsoft windows server 2012 r2
- microsoft windows server 2012 r2 (server core installation)
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows server 2022, 23h2 edition (server core installation)
- microsoft windows server 2025
- microsoft windows server 2025 (server core installation)
- microsoft windows 10 1507
- microsoft windows 10 1607
- microsoft windows 10 1809
- microsoft windows 10 21h2
- microsoft windows 10 22h2
- microsoft windows 11 22h2
- microsoft windows 11 23h2
- microsoft windows 11 24h2
- microsoft windows server 2008
- microsoft windows server 2022 23h2
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-21377 is a medium vulnerability (CVSS 6.5) in Microsoft Windows 10 Version 1507, published February 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 39.9%, the 98th percentile. No source names a fixed version.