What is CVE-2022-35408?

CVE-2022-35408 is a high-severity vulnerability in Insyde Insydeh2o, classified under Write-what-where Condition. CVSS score: 8.2/10. Published 2022-09-22.

How severe is CVE-2022-35408?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Insyde Insydeh2o

CVE-2022-35408

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)

EPSS: 0.003 (26.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Insyde Insydeh2o
N/a — versions n/a

Weakness classification (CWE)

CWE-123 — Write-what-where Condition

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2022-35408?: CVE-2022-35408 is a high-severity vulnerability in Insyde Insydeh2o, classified under Write-what-where Condition. CVSS score: 8.2/10. Published 2022-09-22.
How severe is CVE-2022-35408?: High severity. CVSS v3 base score is 8.2 out of 10.