Is there a public exploit for CVE-2025-61663?

No public exploit for CVE-2025-61663 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2025-61663?

CVE-2025-61663 scores CVSS 4.9 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.14%.

What does CVE-2025-61663 affect?

CVE-2025-61663 affects GNU grub2.

4.9 Medium

A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk.

CVE-2025-61663

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 An attacker who can execute this command can force the system to access memory locations that are no longer valid.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.

Assessment

CVSS: 4.9 (v3.1)
Severity: Medium
EPSS: 0.14% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 18 November 2025
Last updated: 5 November 2026
Affected: GNU · grub2
Assigner: redhat

CVSS vectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

At the source

EUVD (ENISA)

References

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