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High

Denial of Service in Rockwell Automation 1769 CompactLogix CIP Connection Handling

IdentifiersCVE-2025-11694CWE-354· Improper Validation of Integrity…

CVE-2025-11694 affects Rockwell Automation 1769 CompactLogix controllers. The issue is caused by missing validation of sequence numbers and source IP addresses in the CIP protocol. According to the provided content, exposed Connection IDs are visible on the device web interface and can be abused by an attacker to interfere with controller communications and trigger a denial-of-service condition. Successful exploitation results in a minor fault on the affected controller. The available information indicates a network-reachable availability issue and does not describe confidentiality or integrity impact.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an unauthenticated remote attacker to cause a denial-of-service condition on an affected 1769 CompactLogix controller, resulting in a minor fault. Based on the provided CVSS v4.0 vector, the primary impact is to availability; no confidentiality or integrity impact is stated in the available information.

Mitigation

If you can’t patch tonight, do this now.

Specific mitigation steps are not provided in the available content. Based on the described attack path, prudent interim measures would include restricting network access to affected controllers and their web interfaces, limiting exposure of CIP services to trusted management and control networks only, and reducing the ability of untrusted hosts to reach the device over the network. Definitive mitigation guidance is currently not available in the provided information and should be taken from Rockwell Automation advisory SD1776.

Remediation

Patch, then assume compromise.

The provided content references Rockwell Automation advisory SD1776 as the vendor advisory for this issue. Specific remediation details, such as fixed firmware versions or upgrade instructions, are not available in the provided information. Review and apply the vendor guidance in advisory SD1776: https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1776.html.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Rockwell Automation1769 Compactlogix Controllershardware
Rockwell AutomationCompactlogix 5370hardware

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

4 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2025-11694
NVD
nvd.nist.gov/vuln/detail/CVE-2025-11694
MITRE CWE · CWE-354
Improper Validation of Integrity Check Value
rockwellautomation.com
rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1776.html