CVE-2018-25112 — An unauthenticated remote attacker may use an uncontrolled resource consumption

An unauthenticated remote attacker may use an uncontrolled resource consumption in the IEC 61131 program of the affected products by creating large amounts of network traffic that needs to be handled by the ILC. This results in a Denial-of-Service of the device.

01What is this vulnerability?

An unauthenticated remote attacker may use an uncontrolled resource consumption in the IEC 61131 program of the affected products by creating large amounts of network traffic that needs to be handled by the ILC. This results in a Denial-of-Service of the device.

02Affected products

Vendor	Product	Versions
PHOENIX CONTACT	ILC 131	vers:all/*
PHOENIX CONTACT	ILC 151	vers:all/*
PHOENIX CONTACT	ILC 171	vers:all/*
PHOENIX CONTACT	ILC 191 ETH	vers:all/*

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-06-04T09:37:34.736Z
• Last modified: 2025-06-04T13:16:07.981Z

09References

• certvde.com — https://certvde.com/en/advisories/VDE-2018-012/