Microsoft · firmware: arm_scmi: Validate BASE_ERROR_EVENT payload size
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in cb77a50d1114c0c9e084176301a8e094d383edfa : update Microsoft when convenient.
Data as of 2 Nov 2026, 10:58 UTC
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 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in cb77a50d1114c0c9e084176301a8e094d383edfa, c0742f23ec13fb6f5e0cd884323467a6c127d3c2, bd8bc95ef2daa3bac56197cffcbf2d4c5ed42216 +4
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 2 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
This vulnerability concerns the ARM SCMI firmware component, specifically related to validating the payload size of the BASE_ERROR_EVENT. The advisory references Microsoft's support lifecycle but provides no further technical details or impact description. The affected versions are 3.0 and 4.0. No CVSS score or exploit information is available.