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CVE-2026-53253: Bluetooth: bnep: reject short frames before parsing

highCVSS 7.1CVE-2026-53253

CSIRTS triage

Other
What
Short frames are not rejected before parsing in Bluetooth BNEP.
Who is affected
Deployments using Bluetooth BNEP.
Urgency
Remediation is high urgency due to the high severity rating.
Action
Apply the fix for CVE-2026-53253.

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

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.1
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53253

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-2026-53253coverage & exploitation statusNVD · CVE.org

Recent advisories for Bluetooth

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