PT-2026-33396 · Horner Automation · Horner Automation Plc

Published 2026-04-16 · Updated 2026-04-20 · CVE-2026-6284

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Horner Automation PLC (affected versions not specified)

Description An attacker with network access to the PLC can perform brute force password enumeration to gain unauthorized access to systems and services. This is possible due to limited password complexity and the absence of password input limiters or rate limiting.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-521

Related Identifiers

CVE-2026-6284

Affected Products

Horner Automation Plc

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-6284 · Security Note
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-106-02.json · Note
• https://twitter.com/windowsforum/status/2044855979603263754 · Twitter Post
• https://cisa.gov/news-events/ics-advisories/icsa-26-106-02 · Note
• https://twitter.com/CVEnew/status/2045889733738328299 · Twitter Post
• https://twitter.com/SecurityAr58409/status/2046033920202789305 · Twitter Post
• https://hornerautomation.com/cscape-software-free/cscape-software · Note
• https://twitter.com/0dayPublishing/status/2045165320642384107 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2045186350199017952 · Twitter Post