What is CVE-2022-36448?

CVE-2022-36448 is a high-severity vulnerability in Insyde Insydeh2o, classified under Improper Input Validation. CVSS score: 8.2/10. Published 2022-09-28.

How severe is CVE-2022-36448?

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

Improper input validation in Insyde Insydeh2o

CVE-2022-36448

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. There is an SMM memory corruption vulnerability in the Software SMI handler in the PnpSmm driver.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2022-09-28 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.003 (24.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Insyde Insydeh2o

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.insyde.com/security-pledge (Vendor Advisory)
binarly.io/advisories/BRLY-2022-023/index.html (Exploit, Third Party Advisory)
www.insyde.com/security-pledge/SA-2022032 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-36448?: CVE-2022-36448 is a high-severity vulnerability in Insyde Insydeh2o, classified under Improper Input Validation. CVSS score: 8.2/10. Published 2022-09-28.
How severe is CVE-2022-36448?: High severity. CVSS v3 base score is 8.2 out of 10.