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CVE-2026-97988VulnerabilityPublished Updated

Microsoft · vhost: invalidate vring access on IOTLB transitions

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-97988· Medium

Not known to be exploited · fixed in e8fe13c14d57cc7c6bd69c72c5fabaaf0d918f98 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:32 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in e8fe13c14d57cc7c6bd69c72c5fabaaf0d918f98, e4f4761879a230aa59e569102a6ab9851847d833, 021bf73731f7aa94540a549cf850db5968019960 +2

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
  • ≥ 6b1e6cc7855b09a0a9bfa1d9f30172ba366f161c, < e8fe13c14d57cc7c6bd69c72c5fabaaf0d918f98
Fixed in
  • e8fe13c14d57cc7c6bd69c72c5fabaaf0d918f98
LinuxLinuxAffected
  • ≥ 6b1e6cc7855b09a0a9bfa1d9f30172ba366f161c, < e4f4761879a230aa59e569102a6ab9851847d833
Fixed in
  • e4f4761879a230aa59e569102a6ab9851847d833
LinuxLinuxAffected
  • ≥ 6b1e6cc7855b09a0a9bfa1d9f30172ba366f161c, < 021bf73731f7aa94540a549cf850db5968019960
Fixed in
  • 021bf73731f7aa94540a549cf850db5968019960
LinuxLinuxAffected
  • ≥ 6b1e6cc7855b09a0a9bfa1d9f30172ba366f161c, < 7f8ee0b8f632441aec456a7c147fb43f5c73542d
Fixed in
  • 7f8ee0b8f632441aec456a7c147fb43f5c73542d
LinuxLinuxAffected
  • ≥ 6b1e6cc7855b09a0a9bfa1d9f30172ba366f161c, < 4a454af8e56c1596ada1421ae5eba90c8896c7c7
Fixed in
  • 4a454af8e56c1596ada1421ae5eba90c8896c7c7
LinuxLinuxAffected
  • =4.8
Fixed in–

Description

CVE-2026-97988 is a vulnerability related to vhost where vring access is not properly invalidated during IOTLB transitions. The affected software versions are Microsoft versions 3.0 and 4.0. No CVSS score or detailed impact information is provided. There is no indication of known exploitation in the wild or available patches.

References

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