CVE-2025-0689
highpriority · track · 0EPSS 0.005 · 40 %ileDEEURUUSEPSS · scored 2026-10-23
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (52)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-0396Grub: Mehrere SchwachstellenDeutsch2025-02-18csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Grub ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu erzeugen, Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen preiszugeben oder nicht spezifizierte Auswirkungen zu verursachen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (12)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/CVE-2025-0689cnnvd
- https://access.redhat.com/security/cve/cve-2025-0689cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2346122cnnvd
- https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.htmlcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-0689cnnvd
- https://www.gnu.org/software/grub/grub-download.htmlPatchcnnvd
- https://access.redhat.com/security/cve/CVE-2025-0689enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2346122enisa_euvd
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