CVE-2024-42040

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-23 · updated 2026-06-17
Weakness: CWE-120

Description

Buffer Overflow vulnerability in the net/bootp.c in DENEX U-Boot from its initial commit in 2002 (3861aa5) up to today on any platform allows an attacker on the local network to leak memory from four up to 32 bytes of memory stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

Affected products

u-boot: through 2025.10

References

https://github.com/u-boot/u-boot/tags
https://www.schutzwerk.com/advisories/SCHUTZWERK-SA-2024-004.txt
http://seclists.org/fulldisclosure/2024/Aug/38

Get alerted when CVE-2024-42040 or the next vulnerability affects your stack