CVE-2026-6284 Horner Automation Cscape and XL4, XL7 PLC Weak password requirements
Attackers can brute force weak PLC passwords due to lack of complexity requirements and input limits, gaining unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6284?
CVE-2026-6284 is a critical vulnerability in Horner Automation Cscape, published on 17 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-521
Which versions are affected by CVE-2026-6284?
How do I fix CVE-2026-6284?
No fix has been published for CVE-2026-6284 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6284 being exploited?
There is no known exploitation of CVE-2026-6284 in the wild and no public exploit code.
Sources
Also known as GHSA-r9f4-h79v-5p47.