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CVE-2026-6284

Horner Automation Cscape and XL4, XL7 PLC Weak password requirements

Published: Apr 17, 2026Updated: Apr 20, 2026 Sources: CVE List NVD csafCWE-521
9.1CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 64.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

An attacker with network access to the PLC is able to brute force discover passwords to gain unauthorized access to systems and services. The limited password complexity and no password input limiters makes brute force password enumeration possible.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-521

Affected Products

Horner Automation
commercialaka cscape envisionrv, cscape
CscapeEmbedded
ICS / OT / IoT / plc-scada-hmi
XL7 PLCEmbedded
ICS / OT / IoT / plc-scada-hmi
XL4 PLCEmbedded
ICS / OT / IoT / plc-scada-hmi

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Credential Access
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References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-02.json
github.com
https://hornerautomation.com/cscape-software-free/cscape-software/
hornerautomation.com
https://www.cisa.gov/news-events/ics-advisories/icsa-26-106-02
cisa.gov
and 14 more references View all →
News mentions
Could not load news mentions.

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