PT-2026-40183 · Microsoft · Windows Tcp/Ip+1

Published 2026-05-12 · Updated 2026-05-12 · CVE-2026-35422

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:N/I:C/A:N

Name of the Vulnerable Software and Affected Versions Windows TCP/IP (affected versions not specified)

Description An authentication bypass exists in Windows TCP/IP that allows an authorized attacker to bypass a security feature over a network by using an alternate path or channel.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Authentication Bypass Using an Alternate Path or Channel

Weakness Enumeration

CWE-288

Related Identifiers

BDU:2026-06597

CVE-2026-35422

Affected Products

Windows

Windows Tcp/Ip

References · 5

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35422 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35422 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-35422 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-35422 · Security Note
• https://bdu.fstec.ru/vul/2026-06597 · Security Note