A stack-based buffer overflow vulnerability exists in the OpenPLC Runtime EtherNet/IP parser functionality of OpenPLC _v3 b4702061dc14d1024…

Published 2 y ago 2024-09-18 · modified 4 mo ago 2026-06-17 · JSON

CVSS

9.0

v3.1 · CNA

CISA KEV

not known exploited

EPSS

2.4%

percentile 84%

Public exploits

none known

A stack-based buffer overflow vulnerability exists in the OpenPLC Runtime EtherNet/IP parser functionality of OpenPLC _v3 b4702061dc14d1024856f71b4543298d77007b88. A specially crafted EtherNet/IP request can lead to remote code execution. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.

CISA SSVC assessment

Exploitation: Proof of concept public
Automatable: no
Technical impact: total
Assessed: 2 y ago 2024-09-18

Exploit prediction (EPSS)

2.40% probability of exploitation in the next 30 days, higher than 84% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.1	9.0	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H`
CNA	3.1	9.0	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H`
NVD	3.1	9.8	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

OpenPLC OpenPLC_v3
openplcproject openplc_v3

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-787 Out-of-bounds Write

References

talosintelligence.com /vulnerability_reports/TALOS-2024-2005
talosintelligence.com /vulnerability_reports/TALOS-2024-2005

Sources

CVE List: CVE-2024-34026
NVD: CVE-2024-34026

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary