CVE-2023-34195
highpriority · track · 31EPSS 0.002 · 14 %ileDEEUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (19)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2023-2375Insyde UEFI Firmware: Schwachstelle ermöglicht CodeausführungDeutsch2023-09-17csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in Insyde UEFI Firmware ausnutzen, um beliebigen Programmcode auszuführen.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2023-34195/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2023-34195cnnvd
- https://www.insyde.com/security-pledge/SA-2023052cnnvd
- https://www.insyde.com/security-pledgeenisa_euvd
- https://www.insyde.com/security-pledge/SA-2023052enisa_euvd
- https://www.insyde.com/security-pledgeVendor Advisorynvd
- https://www.insyde.com/security-pledge/SA-2023052Vendor Advisorynvd
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