Skip to main content
CVE-2026-46137VulnerabilityPublished Updated

Microsoft · mptcp: pm: ADD_ADDR rtx: fix potential data-race

Affects MicrosoftSource GCVE Database

0
Compare
Authoritative record:CVE-2026-46137· Critical 9.8

Not known to be exploited · CVSS 9.8 Critical · fixed in d9b272a85fe6b8f993e37915311e4038c814a533 : patch Microsoft as a priority.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in d9b272a85fe6b8f993e37915311e4038c814a533, cc3c0399361efaaf7ae64262eb3f70829b1189c6, b35605e1f1e877038c8c9d499babbc891cdd234f +5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 May 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 29 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < d9b272a85fe6b8f993e37915311e4038c814a533
Fixed in
  • d9b272a85fe6b8f993e37915311e4038c814a533
LinuxLinuxAffected
  • ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < cc3c0399361efaaf7ae64262eb3f70829b1189c6
Fixed in
  • cc3c0399361efaaf7ae64262eb3f70829b1189c6
LinuxLinuxAffected
  • ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < b35605e1f1e877038c8c9d499babbc891cdd234f
Fixed in
  • b35605e1f1e877038c8c9d499babbc891cdd234f
LinuxLinuxAffected
  • ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 23079e0b7742ec114d3507c3e3aad01b7b69e4af
Fixed in
  • 23079e0b7742ec114d3507c3e3aad01b7b69e4af
LinuxLinuxAffected
  • ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 013dcdc1961543b9a3433466bc8c79a2f4ca75b5
Fixed in
  • 013dcdc1961543b9a3433466bc8c79a2f4ca75b5
LinuxLinuxAffected
  • ≥ 00cfd77b9063dcdf3628a7087faba60de85a9cc8, < 6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3
Fixed in
  • 6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3

Description

This vulnerability, identified as CVE-2026-46137, relates to a potential data race in the mptcp (Multipath TCP) implementation specifically in the ADD_ADDR retransmission logic. It affects Microsoft product version 3.0. No CVSS score or detailed impact information is provided.

References

Community reviews

Loading reviews…