CVE-2024-36981

⚠️ high

Summary

An out-of-bounds read vulnerability exists in the OpenPLC Runtime EtherNet/IP PCCC parser functionality of OpenPLC_v3 b4702061dc14d1024856f71b4543298d77007b88. A specially crafted network request can lead to denial of service. An attacker can send a series of EtherNet/IP requests to trigger this vulnerability.This is the final instance of the incorrect comparison.

CVSS Score

7.5

High

EPSS Score

0.2

Exploit Probability

Published Date

2024-09-18

First Seen: 2026-01-05

📊 Relative Risk Intelligence

This CVE is Moderate Risk - more severe than 69.0% of all 328,009 vulnerabilities in our database.

#101,817

Above average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Sep 18, 2024

🔍 Exploitation Status

Poc

Proof-of-concept available

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

Discovered by Jared Rittle of Cisco Talos.

SSVC data provided by CISA

Last Modified 2025-11-04

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE IDs (Weakness Types)

CWE-125

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
openplcproject	openplc_v3_firmware	Affected	v2024-04-04

🔗 References 2

https://talosintelligence.com/vulnerability_reports/...

Exploit Third Party Advisory

https://www.talosintelligence.com/vulnerability_repo...

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-31156	🔶 medium	6.5	0.0	A path injection vulnerability exists in OpenPLC v3 (2c82b0e79c53f8c1f1458eee15fec173400d6e1a) as the binary program com...	2026-05-13
CVE-2024-34026	⛔ critical	9.0	6.6	A stack-based buffer overflow vulnerability exists in the OpenPLC Runtime EtherNet/IP parser functionality of OpenPLC _v...	2024-09-18
CVE-2024-36980	⚠️ high	7.5	0.4	An out-of-bounds read vulnerability exists in the OpenPLC Runtime EtherNet/IP PCCC parser functionality of OpenPLC_v3 b4...	2024-09-18
CVE-2024-39589	⚠️ high	7.5	0.2	Multiple invalid pointer dereference vulnerabilities exist in the OpenPLC Runtime EtherNet/IP parser functionality of Op...	2024-09-18
CVE-2024-39590	⚠️ high	7.5	0.2	Multiple invalid pointer dereference vulnerabilities exist in the OpenPLC Runtime EtherNet/IP parser functionality of Op...	2024-09-18
CVE-2024-37741	🔶 medium	5.4	0.4	OpenPLC 3 through 9cd8f1b allows XSS via an SVG document as a profile picture.	2024-06-28

These CVEs affect the same products