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CVE-2026-98461VulnerabilityPublished Updated

Microsoft · Bluetooth: hci_sock: validate event length before filtering

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98461· Medium

Not known to be exploited · fixed in f894f6292d5122cd62d30600736b4a0ae79f7770 : update Microsoft when convenient.

Data as of 2 Nov 2026, 10:58 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in f894f6292d5122cd62d30600736b4a0ae79f7770, ebdd49cec380731844ed9df4092a29a014623df4, dca25c204f71be0556a15177dbe037237ac43e5e +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f894f6292d5122cd62d30600736b4a0ae79f7770
Fixed in
  • f894f6292d5122cd62d30600736b4a0ae79f7770
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < ebdd49cec380731844ed9df4092a29a014623df4
Fixed in
  • ebdd49cec380731844ed9df4092a29a014623df4
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < dca25c204f71be0556a15177dbe037237ac43e5e
Fixed in
  • dca25c204f71be0556a15177dbe037237ac43e5e
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < b0a6cf99afd57a39598b1beca0e86ef5004980de
Fixed in
  • b0a6cf99afd57a39598b1beca0e86ef5004980de
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 3976bbcd43b9b94c53ac9b0fd28888011588f4cc
Fixed in
  • 3976bbcd43b9b94c53ac9b0fd28888011588f4cc
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2501a3b7b7144d1d11939b355a48ed01f83d0c62
Fixed in
  • 2501a3b7b7144d1d11939b355a48ed01f83d0c62

Description

This vulnerability involves the Bluetooth hci_sock component where event length validation is insufficient before filtering. It affects Microsoft products versions 3.0 and 4.0. No CVSS score or detailed impact information is provided.

References

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