Microsoft · Bluetooth: L2CAP: validate frame length before control and FCS access
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in f557274af7b94b6134692e6f26b880f1e34c15bf : update Microsoft when convenient.
Data as of 2 Nov 2026, 10:58 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in f557274af7b94b6134692e6f26b880f1e34c15bf, c6a288e6001bcce16553c3853e0f5a45eaaf85c7, 4373ba79a267947e771c438507f7b103e30bdb21 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
This vulnerability involves the Bluetooth L2CAP protocol where frame length validation is insufficient before accessing control and Frame Check Sequence (FCS) fields. It affects Microsoft products version 3.0 and 4.0. No CVSS score or detailed impact information is provided, and no known exploits are reported in the wild.