CVE-2019-1338

5.9 mediumEPSS 3.6%

Medium (5.9) in microsoft. EPSS 3.6% chance of exploitation in the next 30 days.

A security feature bypass vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLMv2 protection if a client is also sending LMv2 responses, aka 'Windows NTLM Security Feature Bypass Vulnerability'.

Severity

CVSS 3.1

5.9 medium

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

EPSS: 3.6% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)
Published: 2019-10-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

microsoft:windows_7
microsoft:windows_server_2008

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1338
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1338

Check your stack JSON