Buffer overflow in Insyde Insydeh2o
CVE-2023-39283
An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (8.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Insyde Insydeh2o — versions 5.5.05.53.22, 5.6, 5.6.05.60.22
Weakness classification (CWE)
References
- www.insyde.com/security-pledge (Not Applicable)
- www.insyde.com/security-pledge/SA-2023055 (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-39283?
- CVE-2023-39283 is a high-severity vulnerability in Insyde Insydeh2o, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-11-02.
- How severe is CVE-2023-39283?
- High severity. CVSS v3 base score is 7.8 out of 10.