CVE-2025-61661

CWE-1317 documents7 sources
Severity
4.8MEDIUM
EPSS
0.0%
top 88.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
GNU Grub2
Timeline
PublishedNov 18

Description

A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although…

CVSS vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HExploitability: 0.5 | Impact: 4.2

Affected Packages1 packages

▶CVEListV5gnu/grub22.14

🔴Vulnerability Details

3
GHSA
GHSA-cjch-253g-8hp2: A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component↗2025-11-18
▶
OSV
CVE-2025-61661: A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component↗2025-11-18
▶
CVEList
Grub2: grub2: out-of-bounds write via malicious usb device↗2025-11-18
▶

📋Vendor Advisories

3
Red Hat
grub2: grub2: Out-of-bounds write via malicious USB device↗2025-11-18
▶
Microsoft
Grub2: grub2: out-of-bounds write via malicious usb device↗2025-11-11
▶
Debian
CVE-2025-61661: grub2 - A vulnerability has been identified in the GRUB (Grand Unified Bootloader) compo...↗2025
▶