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VulnerabilityPublished

CVE-2025-61661: CWE-131

Source GCVE Database

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Authoritative record:CVE-2025-61661· Medium 4.8

Not known to be exploited · CVSS 4.8 Medium.

Data as of 13 Nov 2026, 20:18 UTC

CVSS 3.1 base score
4.8Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.14.8
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
GNUgrub2Affected
  • <=2.14
Fixed in–

AI-suggested

Red Hat does not currently provide a patch for this vulnerability. The recommended mitigation is to avoid connecting untrusted or unknown USB devices to the machine.

Description

A vulnerability in the GRUB bootloader allows a local attacker with physical access to cause a denial of service by connecting a malicious USB device during boot. The flaw is due to improper string length handling when reading USB device information, potentially causing GRUB to crash or experience data corruption. Exploitation complexity is high, and the impact is mostly limited to denial of service with low integrity impact.

References

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