CVE-2026-25302: Improper Verification of Cryptographic Signature in Boot
Published Oct 6, 2026
·Updated
Cryptographic Issue when processing non-ELF partitions, authentication and signature checks are bypassed, allowing unsigned or corrupted images to be mounted and processed.
Event History
Oct 6, 2026
CVE Published
via MITRE·06:29 AM
Data Sourced
via MITRE·06:29 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·07:16 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What level of access does an attacker need to exploit this issue?
The CVSS vector indicates local access and low privileges are required. No user interaction is required.
2
Which images are affected by the signature-verification bypass?
The issue occurs when processing non-ELF partitions. In that path, authentication and signature checks can be bypassed, allowing unsigned or corrupted images to be mounted and processed.
3
What security impact could successful exploitation have?
The reported impact includes high confidentiality and availability impact. Integrity impact is listed as none in the CVSS vector.