An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5.
Priority LOW 37CWE-121Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. A stack buffer overflow vulnerability in the MebxConfiguration driver leads to arbitrary code execution. Control of a UEFI variable under the OS can cause this overflow when read by BIOS code.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00229 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:* | 5.0 – 5.5 | Vulnerable | Insyde Software |
- cpe:2.3:o:insyde:kernel:*:*:*:*:*:*:*:* Versions 5.0 – 5.5 Vulnerable ·Insyde Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2022-36337
- 2026-10-03 Alias added: GHSA-wm2m-ch4m-97cr
References
More Insyde Software Kernel vulnerabilities
- TI-2021-16172 Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize. CVSS 3.1CRITICAL 9.8
- TI-2021-16170 NetworkPkg/IScsiDxe has remotely exploitable buffer overflows. CVSS 3.1HIGH 8.1
- TI-2024-32800 An issue was discovered in AcpiS3SaveDxe and ChipsetSvcDxe in Insyde InsydeH2O with… CVSS 3.1MEDIUM 6.4
- TI-2022-11814 Use of a untrusted pointer allows tampering with SMRAM and OS memory in SdHostDriver and… CVSS 3.1HIGH 8.2
- TI-2022-11813 Incorrect pointer checks within the NvmExpressDxe driver can allow tampering with SMRAM… CVSS 3.1HIGH 8.2
- TI-2022-11811 SMI functions in AhciBusDxe use untrusted inputs leading to corruption of SMRAM. CVSS 3.1HIGH 8.2
Sources
- CVE-2022-36337 · CVE Program
- CVE-2022-36337 · NVD
- FIRST EPSS
- GHSA-wm2m-ch4m-97cr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences