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CVE-2026-98745VulnerabilityPublished Updated

Microsoft · arm64/fpsimd: signal: Forbid non-streaming SVE payload on SME-only systems

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2026-98745· High

Not known to be exploited · fixed in f2338929c7663859c0c74dd6fef2c0245066f845 : patch Microsoft soon.

Data as of 28 Oct 2026, 09:29 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in f2338929c7663859c0c74dd6fef2c0245066f845, e060d9069b49fe55f38057dfe592068014652671, 88c1c611552b24658eb61244086691c02be2013b +3

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=6.1.7 <6.2
Fixed in
  • f2338929c7663859c0c74dd6fef2c0245066f845
  • e060d9069b49fe55f38057dfe592068014652671
  • 88c1c611552b24658eb61244086691c02be2013b
  • 052acee9880114879b5c221fc8dad69b786d0938
  • 6.2
  • 2bce6f006cfe0b60e8249fd8d51396d99355cba3
LinuxLinuxAffected
  • =6.2
Fixed in–

Description

This vulnerability involves the arm64/fpsimd signal handling where non-streaming SVE payloads are forbidden on SME-only systems. It affects Microsoft products with versions 3.0 and 4.0. No CVSS score or detailed impact information is provided, and there is no indication of active exploitation in the wild.

References

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