CVE-2025-61663

MEDIUM

MEDIUM Priority: 0.01 BB Relevance: 35/100

Published: 2025-11-18 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

No Auth No Interaction

CVSS Vector Breakdown

AV: Local

AC: High

PR: None

UI: None

S: Unchanged

C: Low

I: Low

A: Low

Description

A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability. Impact on the data integrity and confidentiality is also not discarded.