CVE-2025-61663 (GCVE-0-2025-61663)

Vulnerability from cvelistv5 – Published: 2025-11-18 18:20 – Updated: 2026-09-01 11:53
VLAI
Title
Grub2: missing unregister call for normal commands may lead to use-after-free
Summary
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 An attacker who can execute this command can force the system to access memory locations that are no longer valid.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.
Severity
4.9 (Medium)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-19 14:27 UTC
CWE
  • CWE-825 - Expired Pointer Dereference
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1045 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2025-61663 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2414684 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2025-11-18 00:00
Show details on NVD website
To clipboard 

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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.