CVE-2026-51537
EIPStackGroup OpENer 2.3.0 (commit 76b95cf) has an out-of-bounds read issue in Connection Manager handling of ForwardOpen requests when processing short malformed packets. An attacker can send a valid ENIP outer frame carrying a malformed CIP ForwardOpen/LargeForwardOpen request, causing the parser to continue reading fields even when request data is insufficient. This issue is remotely triggerable via network traffic and does not require authentication.
- Affected products
- Openemr
- Opener Project Opener
- = 2.3.0
- CVSS 3.1
- 9.1 CRITICAL
- EPSS
- 0.5% (40th percentile)
- Weakness
- CWE-125
- NVD status
- Analyzed
- Published
- 2026-07-13
CVE-2026-51537 at NVD
No indexed exploits for CVE-2026-51537 yet
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No exploit for CVE-2026-51537 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.