Out-of-bounds read in OpenPLC_v3
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-36981
- 2026-10-03 Alias added: GHSA-m92x-f2xf-6w5q
References
More Openplc V3 Firmware vulnerabilities
- TI-2024-22495 Stack-based buffer overflow in OpenPLC_v3 CVSS 3.1CRITICAL 9.8
- TI-2024-26520 Incorrect type conversion in OpenPLC_v3 CVSS 3.1HIGH 7.5
- TI-2024-26519 Incorrect type conversion in OpenPLC_v3 CVSS 3.1HIGH 7.5
- TI-2024-24527 Out-of-bounds read in OpenPLC_v3 CVSS 3.1HIGH 7.5
- TI-2026-23850 A path injection vulnerability exists in OpenPLC v3… CVSS 3.1MEDIUM 6.5
- TI-2021-11719 Command Injection in Open PLC Webserver v3 allows remote attackers to execute arbitrary… CVSS 3.1HIGH 8.8
Sources
- CVE-2024-36981 · CVE Program
- CVE-2024-36981 · NVD
- FIRST EPSS
- GHSA-m92x-f2xf-6w5q · GitHub Advisory Database · CC BY 4.0
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