What is CVE-2022-32475?

CVE-2022-32475 is a high-severity vulnerability in Insyde Insydeh2o, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2023-02-15.

How severe is CVE-2022-32475?

High severity. CVSS v3 base score is 7.0 out of 10.

Vulnerability in Insyde Insydeh2o

CVE-2022-32475

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. DMA attacks on the VariableRuntimeDxe shared buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This issue was fixed in the kernel, which also protected chipset and OEM chipset code.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

Published 2023-02-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (2.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Insyde Insydeh2o

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

www.insyde.com/security-pledge (Vendor Advisory)
www.insyde.com/security-pledge/SA-2023007 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-32475?: CVE-2022-32475 is a high-severity vulnerability in Insyde Insydeh2o, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2023-02-15.
How severe is CVE-2022-32475?: High severity. CVSS v3 base score is 7.0 out of 10.