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Fencer Vulns
high 7.5

CVE-2025-9280 json

ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities

published 2026-01-20 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-3432

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

A security issue exists within ArmorStart® LT that can result in a denial-of-service condition. Fuzzing performed using Defensics causes the device to become unresponsive, requiring a reboot.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-029-02 updated cvss 7.5

Rockwell Automation ArmorStart LT

  • Rockwell Automation ArmorStart LT 290D <=V2.002 Rockwell Automation ArmorStart LT 291D <=V2.002 Rockwell Automation ArmorStart LT 294D <=V2.002
    affected: mitigation “There is no patch or upgrade at this time. Rockwell Automation recommends users apply security best practices to mitigate the risk of these vulnerabilities.” support.rockwellautomation.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Rockwell Automation ArmorStart® LT

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.