CVE-2026-38719
Deferred Deferred - Pending Action
Out-of-Bounds Read in OpENer CPF Parser

Publication date: 2026-05-18

Last updated on: 2026-05-18

Assigner: MITRE

Description
OpENer v2.3-558-g1e99582 contains an out-of-bounds read vulnerability in the Common Packet Format (CPF) parser, specifically in CreateCommonPacketFormatStructure() in source/src/enet_encap/cpf.c. A crafted ENIP/CPF message can supply an attacker-controlled item_count value that is not consistently validated against the remaining data_length of the CPF slice
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2026-05-18
Last Modified
2026-05-18
Generated
2026-06-10
AI Q&A
2026-05-19
EPSS Evaluated
2026-06-08
NVD
CVE-2026-38719
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
opener opener 2.3-558-g1e99582
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability exists in OpENer version v2.3-558-g1e99582 within the Common Packet Format (CPF) parser. Specifically, the function CreateCommonPacketFormatStructure() does not properly validate an attacker-controlled item_count value against the remaining data length of the CPF slice. This leads to an out-of-bounds read, where the software reads memory outside the intended buffer.

Impact Analysis

The vulnerability can cause an out-of-bounds read, which may lead to a denial of service (DoS) by crashing the affected application or system. According to the CVSS score (6.2), the impact is primarily on availability, with no direct impact on confidentiality or integrity.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-38719. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart