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CVE-2026-53258: wifi: fix leak if split 6 GHz scanning fails

mediumCVSS 5.5CVE-2026-53258

CSIRTS triage

Other
What
There is a leak issue in the wifi subsystem if split 6 GHz scanning fails.
Who is affected
Users of the wifi subsystem are affected.
Urgency
Medium urgency as it could lead to information leakage, but no active exploitation is reported.
Action
Apply patches when they are released.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 5.5
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53258

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-53258coverage & exploitation statusNVD · CVE.org

Recent advisories for wifi

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center