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CVE-2026-97597VulnerabilityPublished Updated

Microsoft · ipv6: flowlabel: cap duplicate leases per socket

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-97597· Medium

Not known to be exploited · fixed in 467467bf4209f9f8add0c648bae763f92a0224c3 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:19 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 467467bf4209f9f8add0c648bae763f92a0224c3, 0159f716d8adbe85951cdf008d0afe27d874eaa6, 42abef116bb2265eeccae55a0dc91a9f1546f74c +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Sep 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 467467bf4209f9f8add0c648bae763f92a0224c3
Fixed in
  • 467467bf4209f9f8add0c648bae763f92a0224c3
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 0159f716d8adbe85951cdf008d0afe27d874eaa6
Fixed in
  • 0159f716d8adbe85951cdf008d0afe27d874eaa6
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 42abef116bb2265eeccae55a0dc91a9f1546f74c
Fixed in
  • 42abef116bb2265eeccae55a0dc91a9f1546f74c
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 8d6cd188508513503805c156165de38e4e4a8615
Fixed in
  • 8d6cd188508513503805c156165de38e4e4a8615
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 6d917992c22b6029fc2dc1bd464b7f6709357161
Fixed in
  • 6d917992c22b6029fc2dc1bd464b7f6709357161
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 2f1a6dd5c80ceb902f50449efe899f29cd7918e3
Fixed in
  • 2f1a6dd5c80ceb902f50449efe899f29cd7918e3

Description

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

References

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