CVE-2026-51540
Critical
Description
OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer underflow in the processing of connected explicit messages (SendUnitData).
SeverityCritical
CVSS9.8
Exploit probability—
ProductOpener
PublishedJul 13, 2026
First seenJul 13, 2026
Weakness typeCWE-191CWE-191
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| opener_project opener | 2.3.0 | — |
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