CVE-2023-34195

An issue was discovered in SystemFirmwareManagementRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The implementation of the GetImage method retrieves the value of a runtime variable named GetImageProgress, and later uses this value as a function pointer. This variable is wiped out by the same module near the end of the function. By setting this UEFI variable from the OS to point into custom code, an attacker could achieve arbitrary code execution in the DXE phase, before several chipset locks are set.

Published: 2023-09-18 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-34195 is rated Low Risk (35.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.22%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-34195

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.12% 0.22% +0.10%
2 2025-03-30 0.30% 0.12% -0.18%
3 2025-03-29 — 0.30% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-34195

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2023-34195

Affected software / configurations for CVE-2023-34195

Vendor Product Version Raw CPE
insyde insydeh2o >= 5.2, < 5.2.05.28.22 cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o >= 5.3, < 5.3.05.37.22 cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o >= 5.4, < 5.4.05.45.22 cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o >= 5.5, < 5.5.05.53.22 cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
insyde insydeh2o >= 5.6, < 5.6.05.60.22 cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*

References for CVE-2023-34195

cvelogic Threat Intelligence