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High 8.2Published Sep 9, 2026
CVE-2026-12855H19WMIHandlerSmm: unvalidated memory boundary could result in arbitrary code execution.
Updated under an hour ago ()
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It affects Insyde Software InsydeH2O. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Unvalidated memory boundary could result in arbitrary code execution. The vulnerability exists in the code developed specifically for HP projects.
- CVSS
- 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-20
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Insyde
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Insyde Software InsydeH2O insyde_software:insydeh2o (from the name) | See in the Solution | CNA record |
References
- https://www.insyde.com/security-pledge/sa-2026009/
- https://www.kb.cert.org/vuls/id/553437
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.