High severity · published Oct 13, 2026
CVE-2026-12655
1732E ArmorBlock® - Multiple Vulnerabilities
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
A security issue exists within 1732E ArmorBlock® I/O, where an unauthenticated attacker can change the device's webserver password without valid credentials. This could result in admin account takeover or unauthorized modification of device configuration.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
1A
1732E ArmorBlock® I/O · Rockwell Automation
through 3.012 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12655
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12655
www.rockwellautomation.com
https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1801.html
More from 1732E ArmorBlock® I/O
8.7
CVE-2026-12656
1732E ArmorBlock® - Multiple Vulnerabilities