Microsoft · arm64/fpsimd: signal: Forbid non-streaming SVE payload on SME-only systems
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in f2338929c7663859c0c74dd6fef2c0245066f845 : patch Microsoft soon.
Data as of 28 Oct 2026, 09:29 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in f2338929c7663859c0c74dd6fef2c0245066f845, e060d9069b49fe55f38057dfe592068014652671, 88c1c611552b24658eb61244086691c02be2013b +3
Exploitation evidence
Disclosed: evidence found.
CVE published 18 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| 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.