CVE record · CVE-2025-61661

Grub2: grub2: out-of-bounds write via malicious usb device

CVSS 4.8 MediumEPSS 0.0021 · 10th percentile

Published by the CVE Program (CNA: redhat) at 18 Nov 2025, 18:20 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
GNU	grub2 Package name: grub2 https://git.savannah.gnu.org/git/grub.git	affected 2.14 and earlier semver Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: grub2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Enterprise Linux 7 Package name: grub2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: grub2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: grub2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-8 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2025-61661
CNA: redhat
Weakness (CWE): CWE-131
Tags: GNU grub2
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat OpenShift Container Platform 4
Memory corruption
Published: 18 Nov 2025
Updated: 5 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.8	Medium	3.1	CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0021, the 10th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

18 Nov 2025, 18:20 UTC Confirmed by the CVE List
18 Nov 2025, 19:15 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/security/cve/CVE-2025-61661 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2413827 issue-trackingredhat

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.