All vulnerabilities
CVE-2024-43451

Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability

Microsoft WindowsOperating systems
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationExploited in the wildAdded to KEV 12 Nov 2024CISA KEV
Exploit odds (EPSS)84.3%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.0.26100.2314Also 10.0.17763.6532, 10.0.20348.2849 and 10 moreCVE List
Federal deadline3 Dec 2024Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

  • 10.0.26100.2314Windows Server 2025CVE List
  • 10.0.26100.2314Windows Server 2025 (Server Core installation)CVE List
  • 10.0.17763.6532Windows 10 Version 1809CVE List
  • 10.0.17763.6532Windows Server 2019CVE List
  • 10.0.17763.6532Windows Server 2019 (Server Core installation)CVE List
  • 10.0.20348.2849Windows Server 2022CVE List
Show all 24 fixed versions
  • 10.0.19044.5131Windows 10 Version 21H2CVE List
  • 10.0.22621.4460Windows 11 version 22H2CVE List
  • 10.0.19045.5131Windows 10 Version 22H2CVE List
  • 10.0.22631.4460Windows 11 version 22H3CVE List
  • 10.0.22631.4460Windows 11 Version 23H2CVE List
  • 10.0.25398.1251Windows Server 2022, 23H2 Edition (Server Core installation)CVE List
  • 10.0.26100.2314Windows 11 Version 24H2CVE List
  • 10.0.10240.20826Windows 10 Version 1507CVE List
  • 10.0.14393.7515Windows 10 Version 1607CVE List
  • 10.0.14393.7515Windows Server 2016CVE List
  • 10.0.14393.7515Windows Server 2016 (Server Core installation)CVE List
  • 6.0.6003.22966Windows Server 2008 Service Pack 2CVE List
  • 6.0.6003.22966Windows Server 2008 Service Pack 2 (Server Core installation)CVE List
  • 6.0.6003.22966Windows Server 2008 Service Pack 2CVE List
  • 6.1.7601.27415Windows Server 2008 R2 Service Pack 1CVE List
  • 6.1.7601.27415Windows Server 2008 R2 Service Pack 1 (Server Core installation)CVE List
  • 6.3.9600.22267Windows Server 2012 R2CVE List
  • 6.3.9600.22267Windows Server 2012 R2 (Server Core installation)CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 12 Nov 2024Added to CISA KEVCISA KEV
  2. 12 Nov 2024, 17:53 UTCPublishedCVE List

Description

Microsoft Windows contains an NTLMv2 hash spoofing vulnerability that could result in disclosing a user's NTLMv2 hash to an attacker via a file open operation. The attacker could then leverage this hash to impersonate that user.

Text from CVE List

Affected versions 24

  • Windows Server 2025affected: 10.0.26100.0 before 10.0.26100.2314CVE List
  • Windows Server 2025 (Server Core installation)affected: 10.0.26100.0 before 10.0.26100.2314CVE List
  • Windows 10 Version 1809affected: 10.0.17763.0 before 10.0.17763.6532CVE List
  • Windows Server 2019affected: 10.0.17763.0 before 10.0.17763.6532CVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before 10.0.17763.6532CVE List
  • Windows Server 2022affected: 10.0.20348.0 before 10.0.20348.2849CVE List
  • Windows 10 Version 21H2affected: 10.0.19043.0 before 10.0.19044.5131CVE List
  • Windows 11 version 22H2affected: 10.0.22621.0 before 10.0.22621.4460CVE List
  • Windows 10 Version 22H2affected: 10.0.19045.0 before 10.0.19045.5131CVE List
  • Windows 11 version 22H3affected: 10.0.22631.0 before 10.0.22631.4460CVE List
  • Windows 11 Version 23H2affected: 10.0.22631.0 before 10.0.22631.4460CVE List
  • Windows Server 2022, 23H2 Edition (Server Core installation)affected: 10.0.25398.0 before 10.0.25398.1251CVE List
  • Windows 11 Version 24H2affected: 10.0.26100.0 before 10.0.26100.2314CVE List
  • Windows 10 Version 1507affected: 10.0.10240.0 before 10.0.10240.20826CVE List
  • Windows 10 Version 1607affected: 10.0.14393.0 before 10.0.14393.7515CVE List
  • Windows Server 2016affected: 10.0.14393.0 before 10.0.14393.7515CVE List
  • Windows Server 2016 (Server Core installation)affected: 10.0.14393.0 before 10.0.14393.7515CVE List
  • Windows Server 2008 Service Pack 2affected: 6.0.6003.0 before 6.0.6003.22966CVE List
  • Windows Server 2008 Service Pack 2 (Server Core installation)affected: 6.0.6003.0 before 6.0.6003.22966CVE List
  • Windows Server 2008 Service Pack 2affected: 6.0.6003.0 before 6.0.6003.22966CVE List
  • Windows Server 2008 R2 Service Pack 1affected: 6.1.7601.0 before 6.1.7601.27415CVE List
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation)affected: 6.1.7601.0 before 6.1.7601.27415CVE List
  • Windows Server 2012 R2affected: 6.3.9600.0 before 6.3.9600.22267CVE List
  • Windows Server 2012 R2 (Server Core installation)affected: 6.3.9600.0 before 6.3.9600.22267CVE List

References 3