CVE-2022-28734: GNU GRUB2

High severity, CVSS 7.0. EPSS: 1.1% chance of exploitation in the next 30 days.

Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.

Affected products

• GNU GRUB2: from 2.00, before 2.06-3 (fixed in 2.06-3)
• Netapp Active Iq Unified Manager: affected versions not specified

Published 2023-07-20. Last modified 2026-06-17.