CVE-2025-4275

highpriority · track · 10OT risk · elevatedEPSS 0.005 · 41 %ileexploit · PoCDEEU

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

3 exploits · PoC

Likely / severe?

0.48% (41st) EPSS

CVSS 7.8 · high

Is it mine?

11 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

A vulnerability in the digital signature verification process does not properly validate variable attributes which allows an attacker to bypass signature verification by creating a non-authenticated NVRAM variable. An attacker may to execute arbitrary signed UEFI code and bypass Secure Boot.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.8highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondaryexploitability 1.1 · impact 6

v3.17.4highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-294USLLM-inferredCWE-345USLLM-inferred

exploits (3)

Public proof-of-concept and weaponised exploit code.

affected products (11)

Products and version ranges known to be affected.

Dell Computerall versionscert_bundDEcpe:/o:dell:dell_computer:-
HP Computerall versionscert_bundDEcpe:/h:hp:computer:-
Insyde UEFI Firmware kernelall versionscert_bundDEcpe:/h:insyde:uefi:kernel
Lenovo Computerall versionscert_bundDEcpe:/h:lenovo:computer:-
Insyde Software InsydeH2O≤ Kernel 5.2~5.7enisa_euvdEU
Insyde Software InsydeH2OKernel 5.2 → 05.2A.16enisa_euvdEU
Insyde Software InsydeH2OKernel 5.3 → 05.39.16enisa_euvdEU
Insyde Software InsydeH2OKernel 5.4 → 05.47.16enisa_euvdEU
Insyde Software InsydeH2OKernel 5.5 → 05.55.16enisa_euvdEU
Insyde Software InsydeH2OKernel 5.6 → 05.62.16enisa_euvdEU
Insyde Software InsydeH2OKernel 5.7 → 05.71.16enisa_euvdEU

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1300Insyde UEFI Firmware: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2025-06-10csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen 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.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2025-06-11modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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