CVE-2023-39281

moderate-risk

Published 2023-11-01

A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to run arbitrary code execution during the DXE phase.

Do I need to act?

0.23% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (11)

Insydeh2O

Affected Vendors

Insyde

References (4)

Vendor Advisory https://www.insyde.com/security-pledge

Vendor Advisory https://www.insyde.com/security-pledge/SA-2023054

Vendor Advisory https://www.insyde.com/security-pledge

Vendor Advisory https://www.insyde.com/security-pledge/SA-2023054

/ 100

moderate-risk

Severity 32/34 · Critical

Exploitability 1/34 · Minimal

Exposure 16/34 · Moderate