CVE-2022-36337: insyde kernel Out-of-bounds Write
CVSS: 8.2v3.1HighModified
Published 23-11-2022Last modified 25-04-2025
Vulnerability summary
CVE-2022-36337 is a high (CVSS 8.2) Out-of-bounds Write vulnerability in insyde kernel. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.5% of scored vulnerabilities.
CVSS score
8.2/10
010
High · v3.1 (CVE.org)EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 23-11-2022PublishedVulnerability first disclosed.
- 25-04-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 8.2Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST8.2HighCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
0.00 pp
From 0.23% on 20-09-2026
20-09-202620-10-2026
EPSS score0.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Affected systems
Insyde1 product
- kernel≥ 5.0, ≤ 5.5
1 vendor · 1 product
References
2 links- www.insyde.com/security-pledgeVendor Advisory
- www.insyde.com/security-pledge/SA-2022039Vendor Advisory