CVE-2026-75352 OpENer - Denial of Service

OpENer v2.3 contains an integer underflow caused by a flaw in the server-side EtherNet/IP ForwardOpen connection-path parser, letting remote attackers cause denial of service, exploit requires network access.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.33% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
9 October 2026
Updated
15 October 2026
Weakness
CWE-191

Vendor fix

Update to the latest version of OpENer.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs