Cyber Resilience

CVE-2023-39540

MediumPublic PoC

Published: 20 February 2024

Published
20 February 2024
Modified
04 November 2025
KEV Added
Patch
CVSS Score v3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0039 60.2th percentile
Risk Priority 12 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-39540 is a medium-severity Buffer Over-read (CWE-126) vulnerability in Weston-Embedded Uc-Tcp-Ip. Its CVSS base score is 5.9 (Medium).

Operationally, ranked in the top 39.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A denial of service vulnerability exists in the ICMP and ICMPv6 parsing functionality of Weston Embedded uC-TCP-IP v3.06.01. A specially crafted network packet can lead to an out-of-bounds read. An attacker can send a malicious packet to trigger this vulnerability.This…

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vulnerability concerns a denial of service within the parsing an IPv4 ICMP packet.

CWE(s)

Related Threats

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

Affected Assets

weston-embedded
uc-tcp-ip
3.06.01

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References