CVE-2022-36337

moderate-risk

Published 2022-11-23

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.

Do I need to act?

0.06% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.2/10 High

LOCAL / LOW complexity

Affected Products (1)

Kernel

Affected Vendors

Insyde

References (4)

Vendor Advisory https://www.insyde.com/security-pledge

Vendor Advisory https://www.insyde.com/security-pledge/SA-2022039

Vendor Advisory https://www.insyde.com/security-pledge

Vendor Advisory https://www.insyde.com/security-pledge/SA-2022039

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moderate-risk

Severity 25/34 · High

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal