Cyber Resilience

CVE-2024-42040

High

Published: 23 August 2024

Published
23 August 2024
Modified
03 April 2026
KEV Added
Patch
CVSS Score v3.1 8.1 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS Score 0.0010 26.6th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-42040 is a high-severity Classic Buffer Overflow (CWE-120) vulnerability in Denx U-Boot. Its CVSS base score is 8.1 (High).

Operationally, ranked at the 26.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

stored behind the packet to the network depending on the later use of DHCP-provided parameters via crafted DHCP responses.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

denx
u-boot
≤ 2025.10

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-120

Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.

References