Buffer overflow in Insyde Insydeh2o
CVE-2022-35895
An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. The FwBlockSericceSmm driver does not properly validate input parameters for a software SMI routine, leading to memory corruption of arbitrary addresses including SMRAM, and possible arbitrary code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
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: 0.004 (29.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
Weakness classification (CWE)
References
- www.insyde.com/security-pledge (Vendor Advisory)
- binarly.io/advisories/BRLY-2022-024/index.html (Exploit, Third Party Advisory)
- www.insyde.com/security-pledge/SA-2022033 (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-35895?
- CVE-2022-35895 is a high-severity vulnerability in Insyde Insydeh2o, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2022-09-21.
- How severe is CVE-2022-35895?
- High severity. CVSS v3 base score is 8.2 out of 10.