What’s Vulnerable › Vulnerabilities
CVE-2026-51541
- Severity: critical (CVSS 9.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-07-13 · updated 2026-08-11
- Weakness: CWE-125
Description
OpENer 2.3.0 (commit 76b95cf) has an out-of-bounds read issue in CIP message parsing when handling malformed explicit requests with a forged EPath size. An attacker can send a valid ENIP SendRRData frame carrying a very short CIP payload whose path_size field claims that many more path words are present than are actually available. Because the parser trusts the attacker-controlled path_size and continues decoding path segments without a remaining-length boundary, it reads beyond the end of the stack receive buffer.
Affected products
References
- https://gist.github.com/MrAlaskan/705c680856e48c535148265c0899ad4b
- https://github.com/EIPStackGroup/OpENer/issues/582
- https://github.com/EIPStackGroup/OpENer/issues/582
Get alerted when CVE-2026-51541 or the next vulnerability affects your stack