CVE-2026-12656

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A denial-of-service security issue exists in the affected product and version. The security issue stems from improper handling of network storm traffic, which can interrupt communication, cause device faults, and affect open TCP and UDP ports. A power cycle is required to recover the device to its normal state.

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0.0/ 10 priority

Sources & remediation

Other references

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1801.html

Weakness type (CWE)

CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Referenced assets1 URL

By indicator

https://sh3llc0d3.com/blog/rockwell-automation-1732e-armorblock-io-modules-remote-authentication-bypass-and-network-storm-dos-cve-2026-12655-cve-2026-12656-advisory-sd1801/

Full discourse1 post

SHELLCODE@sh3ll_c0d318h
Rockwell 1732E ArmorBlock Auth Bypass & Network Storm DoS • CVE-2026-12655 unauthenticated web takeover • Halts EtherNet/IP industrial cell lines Read full: https://sh3llc0d3.com/blog/rockwell-automation-1732e-armorblock-io-modules-remote-authentication-bypass-and-network-storm-dos-cve-2026-12655-cve-2026-12656-advisory-sd1801/ #Hacktober #sh3llc0d3 #OTIoTSecurity #Rockwell #SCADA
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