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CVE-2026-31506VulnerabilityPublished Updated

Microsoft · net: bcmasp: fix double free of WoL irq

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-31506

Not known to be exploited · fixed in cbfa5be2bf64511d49b854a0f9fd6d0b5118621f : update Microsoft when convenient.

Data as of 11 Nov 2026, 23:24 UTC

Severity
Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
CVSS scores by source
NVDCVSS 3.17.8
EPSS
0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in cbfa5be2bf64511d49b854a0f9fd6d0b5118621f, c5e2de193831ab9610a1ca542507f75d126f09b5, 121a6ad9cd42ba3bfc57deae93e3326515c2afe1 +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Apr 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 11 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a2f0751206b03374f6d02f89c18a60f1bb238fea, < cbfa5be2bf64511d49b854a0f9fd6d0b5118621f
Fixed in
  • cbfa5be2bf64511d49b854a0f9fd6d0b5118621f
LinuxLinuxAffected
  • ≥ a2f0751206b03374f6d02f89c18a60f1bb238fea, < c5e2de193831ab9610a1ca542507f75d126f09b5
Fixed in
  • c5e2de193831ab9610a1ca542507f75d126f09b5
LinuxLinuxAffected
  • ≥ a2f0751206b03374f6d02f89c18a60f1bb238fea, < 121a6ad9cd42ba3bfc57deae93e3326515c2afe1
Fixed in
  • 121a6ad9cd42ba3bfc57deae93e3326515c2afe1
LinuxLinuxAffected
  • ≥ a2f0751206b03374f6d02f89c18a60f1bb238fea, < 9e5f5c07cc7d66522f8c9676c28605eba5d4a20e
Fixed in
  • 9e5f5c07cc7d66522f8c9676c28605eba5d4a20e
LinuxLinuxAffected
  • ≥ a2f0751206b03374f6d02f89c18a60f1bb238fea, < 8a30509ce6a29bdf18e0802383c524a7b2357ec0
Fixed in
  • 8a30509ce6a29bdf18e0802383c524a7b2357ec0
LinuxLinuxAffected
  • =6.6
Fixed in–

Description

CVE-2026-31506 is a vulnerability in Microsoft software identified as a double free issue related to the Wake-on-LAN (WoL) interrupt in the bcmasp network component. The vulnerability affects version 3.0 of the product. No CVSS score or detailed impact information is provided. There is no indication of known exploits in the wild or available patches at this time.

References

Community reviews

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