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1. EXECUTIVE SUMMARY
- CVSS v4 8.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Rockwell Automation
- Equipment: ArmorBlock 5000 I/O
- Vulnerabilities: Incorrect Authorization, Improper Authentication
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to predict session numbers or perform privileged actions.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of ArmorBlock 5000 I/O are affected:
- 5032-CFGB16M12P5DR: Versions 1.011 and prior
- 5032-CFGB16M12DR: Versions 1.011 and prior
- 5032-CFGB16M12M12LDR: Versions 1.011 and prior
3.2 VULNERABILITY OVERVIEW
3.2.1 INCORRECT AUTHORIZATION CWE-863
A security issue exists within the 5032 16pt Digital Configurable module’s webserver. The webserver’s session number increments at an interval that correlates to the last two consecutive login session interval, making it predictable.
CVE-2025-7773 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H).
A CVSS v4 score has also been calculated for CVE-2025-7773. A base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).
3.2.2 IMPROPER AUTHENTICATION CWE-287
A security issue exists within the 5032 16pt Digital Configurable module’s webserver. Intercepted session credentials can be used within a three minute timeout window, allowing unauthorized users to perform privileged actions.
CVE-2025-7774 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H).
A CVSS v4 score has also been calculated for CVE-2025-7774. A base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N).
3.3 BACKGROUND
- CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Rockwell Automation reported these vulnerabilities to CISA.
4. MITIGATIONS
Rockwell Automation recommends users update the corrected version if possible. If users of the affected software are unable to upgrade the version, security best practices should be applied.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
- Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
- Locate control system networks and remote devices behind firewalls and isolating them from business networks.
- When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
- Do not click web links or open attachments in unsolicited email messages.
- Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
- Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY
- August 14, 2025: Initial Republication