What’s Vulnerable › Vulnerabilities

CVE-2023-39283

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-02 · updated 2026-06-17
• Weakness: CWE-787

Description

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.

Affected products

• Insydeh2O: from 5.0 through 5.5; 5.5.05.53.22, 5.6, 5.6.05.60.22

References

• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2023055
• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2023055

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