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CVE-2025-40003VulnerabilityPublished Updated

Microsoft · net: mscc: ocelot: Fix use-after-free caused by cyclic delayed work

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2025-40003· High

Not known to be exploited · fixed in c4672bdc4730d28ee8d9f65386599298047c045e : patch Microsoft soon.

Data as of 7 Nov 2026, 12:19 UTC

Severity
High

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

Thin evidence

One scorer or none
Patch
Available – fixed in c4672bdc4730d28ee8d9f65386599298047c045e, c3363db5d0685a8d077ade706051bbccc75f7e14, bc9ea787079671cb19a8b25ff9f02be5ef6bfcf5 +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2025

  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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a556c76adc052c979ef9e80f0cd3fa1379ff4943, < c4672bdc4730d28ee8d9f65386599298047c045e
Fixed in
  • c4672bdc4730d28ee8d9f65386599298047c045e
LinuxLinuxAffected
  • ≥ a556c76adc052c979ef9e80f0cd3fa1379ff4943, < c3363db5d0685a8d077ade706051bbccc75f7e14
Fixed in
  • c3363db5d0685a8d077ade706051bbccc75f7e14
LinuxLinuxAffected
  • ≥ a556c76adc052c979ef9e80f0cd3fa1379ff4943, < bc9ea787079671cb19a8b25ff9f02be5ef6bfcf5
Fixed in
  • bc9ea787079671cb19a8b25ff9f02be5ef6bfcf5
LinuxLinuxAffected
  • ≥ a556c76adc052c979ef9e80f0cd3fa1379ff4943, < 70acdd1eb35ffb3afdcb59e4c3bbb178da411d0f
Fixed in
  • 70acdd1eb35ffb3afdcb59e4c3bbb178da411d0f
LinuxLinuxAffected
  • ≥ a556c76adc052c979ef9e80f0cd3fa1379ff4943, < 2dd7540183f7410e0dc85661defcc8035c14ddc9
Fixed in
  • 2dd7540183f7410e0dc85661defcc8035c14ddc9
LinuxLinuxAffected
  • =4.18
Fixed in–

Description

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

References

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