CVE-2026-83855 Windows WLAN Service - Denial of Service

Windows WLAN Service contains an integer underflow caused by improper input validation, letting unauthorized attackers cause denial of service over a network, exploit requires network access.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
1.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-191

Vendor fix

Update to the latest Windows version with security patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs