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CVE-2026-98877VulnerabilityPublished Updated

Microsoft · irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98877· High

Not known to be exploited · fixed in e79934064be85fc9a3a6434da857307d8b78e33d : patch Microsoft soon.

Data as of 2 Nov 2026, 10:58 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in e79934064be85fc9a3a6434da857307d8b78e33d, e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5, c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40 +4

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 2 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < e79934064be85fc9a3a6434da857307d8b78e33d
Fixed in
  • e79934064be85fc9a3a6434da857307d8b78e33d
LinuxLinuxAffected
  • ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5
Fixed in
  • e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5
LinuxLinuxAffected
  • ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40
Fixed in
  • c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40
LinuxLinuxAffected
  • ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < ab233119a19716b8f33e73ea7e092e0eb353cfbf
Fixed in
  • ab233119a19716b8f33e73ea7e092e0eb353cfbf
LinuxLinuxAffected
  • ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < a2508b8855acc96abe69be73b41b672f1ef12516
Fixed in
  • a2508b8855acc96abe69be73b41b672f1ef12516
LinuxLinuxAffected
  • ≥ a75460547e13c99762c2f9dbfcdd13ad416f91c5, < 4761493dd663443f7353c184e6fa16e1cb3ac5a1
Fixed in
  • 4761493dd663443f7353c184e6fa16e1cb3ac5a1

Description

This vulnerability involves the irqchip/gic-v4 component where VLPIs (Virtual Locality-specific Peripheral Interrupts) are advertised even if no ITS (Interrupt Translation Service) is probed. The issue affects Microsoft products with versions 3.0 and 4.0. No CVSS score or detailed impact information is provided.

References

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