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CVE-2026-53254: Bluetooth: RFCOMM: validate skb length in MCC handlers

highCVSS 7CVE-2026-53254

CSIRTS triage

product: BluetoothOther
What
This vulnerability involves validating skb length in MCC handlers.
Who is affected
Bluetooth implementations are affected by this vulnerability.
Urgency
Remediation is urgent due to its high severity and potential for exploitation.
Action
Apply patches or updates provided by Bluetooth vendors.

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

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53254

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-2026-53254coverage & 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