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CVE-2026-99025VulnerabilityPublished Updated

Microsoft · openvswitch: fix soft lockup

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-99025· High

Not known to be exploited · fixed in ef77dd59cb7b7b0ac0bedd3fe9ee7a8acd8a58f2 : patch Microsoft soon.

Data as of 7 Nov 2026, 13:02 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in ef77dd59cb7b7b0ac0bedd3fe9ee7a8acd8a58f2, c995c52eba1926a5e82823fa5573a6f1b1010e5d, b872de585edff534056c65ba30970b68499fca14 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 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 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 63e7959c4b9bd6f791061c460a22d9ee32ae2240, < ef77dd59cb7b7b0ac0bedd3fe9ee7a8acd8a58f2
Fixed in
  • ef77dd59cb7b7b0ac0bedd3fe9ee7a8acd8a58f2
LinuxLinuxAffected
  • ≥ 63e7959c4b9bd6f791061c460a22d9ee32ae2240, < c995c52eba1926a5e82823fa5573a6f1b1010e5d
Fixed in
  • c995c52eba1926a5e82823fa5573a6f1b1010e5d
LinuxLinuxAffected
  • ≥ 63e7959c4b9bd6f791061c460a22d9ee32ae2240, < b872de585edff534056c65ba30970b68499fca14
Fixed in
  • b872de585edff534056c65ba30970b68499fca14
LinuxLinuxAffected
  • ≥ 63e7959c4b9bd6f791061c460a22d9ee32ae2240, < aaaaf87ea99b8766c9a8aa0e71aa42e6bc8a5320
Fixed in
  • aaaaf87ea99b8766c9a8aa0e71aa42e6bc8a5320
LinuxLinuxAffected
  • ≥ 63e7959c4b9bd6f791061c460a22d9ee32ae2240, < 80db24f3c16fdeef85460d9d66a4aae7a9cb92b4
Fixed in
  • 80db24f3c16fdeef85460d9d66a4aae7a9cb92b4
LinuxLinuxAffected
  • ≥ 63e7959c4b9bd6f791061c460a22d9ee32ae2240, < 55f12552b00a34ca7ab5cf2d2b5ed02f8f06a965
Fixed in
  • 55f12552b00a34ca7ab5cf2d2b5ed02f8f06a965

Description

A vulnerability identified as CVE-2026-99025 affects Microsoft products version 3.0 and 4.0 related to openvswitch, causing a soft lockup during netlink flow dump operations. The issue has been published but lacks detailed technical information and CVSS scoring.

References

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