CVE tracker / CVE-2026-35422

CVE-2026-35422

CVE-2026-35422 is the Windows TCP/IP Driver Security Feature Bypass Vulnerability. Microsoft rates it Important, CVSS 6.5. It is not in CISA's Known Exploited Vulnerabilities catalog. Published May 12, 2026.

Risk summary

MediumSecurity Feature Bypass
6.5
CVSS v3 base
0.6%
EPSS: chance of exploitation in 30 days
Medium
Severity
Important
Microsoft's rating
Unlikely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Authentication bypass using an alternate path or channel in Windows TCP/IP allows an authorized attacker to bypass a security feature over a network.”

How to fix it

Microsoft lists 31 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-288: Authentication Bypass Using an Alternate Path or Channel
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
May 12, 2026
Last revised
May 12, 2026

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.