CVE-2019-1338

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

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'.

References

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

Details

Source: MITRE

Published: 2019-10-10

Updated: 2021-07-21

Type: CWE-326

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.9

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

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM

Tenable Plugins

View all (2 total)

IDNameProductFamilySeverity
129720KB4520009: Windows Server 2008 October 2019 Security UpdateNessusWindows : Microsoft Bulletins
high
129718KB4520003: Windows 7 and Windows Server 2008 R2 October 2019 Security UpdateNessusWindows : Microsoft Bulletins
high