Cyber Resilience

CVE-2024-57543

MediumPublic PoC

Published: 21 January 2025

Published
21 January 2025
Modified
22 April 2025
KEV Added
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Patch
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CVSS Score v3.1 5.5 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0021 43.5th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-57543 is a medium-severity Classic Buffer Overflow (CWE-120) vulnerability in Linksys E8450 Firmware. Its CVSS base score is 5.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 43.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Linksys E8450 v1.2.00.360516 was discovered to contain a buffer overflow vulnerability. The parsed field (dhcpstart_ip) is copied to the stack without length verification.

CWE(s)
CWE-120

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
Why these techniques?

Buffer overflow in dhcpstart_ip parsing on Linksys E8450 router enables remote code execution by exploiting a public-facing application or remote service.

Affected Assets

linksys
e8450 firmware
1.2.00.360516

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.

SC-27 Platform-independent Applications
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