Horner Automation Cscape and XL4, XL7 PLC Weak password requirements
Published Apr 17, 2026
9.3
CRITICALCVSS 4.0
EPSS 0.48%
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.
Affected products
-
- Version 10.0StatusaffectedConstraints-
- Version
-
- Version 16.32.0StatusaffectedConstraints-
- Version
-
- Version 15.60StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Horner Automation | Cscape | unaffected |
| ||||||
| Horner Automation | Xl4 Plc | unaffected |
| ||||||
| Horner Automation | Xl7 Plc | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Horner Automation recommends users update to Cscape v10.2 SP2 or later. Horner Automation has also released the latest firmware for both XL4 and XL7 PLCs. Horner recommends users update to the latest version of the firmware. https://hornerautomation.com/cscape-software-free/cscape-software/
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Apr 17, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Apr–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.48% (0.00479) | 39.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.45% (0.00449) | 35.52th | v5 (v2026.06.15) |
| Apr 18, 2026 | 0.03% (0.00028) | 7.95th | v4 (v2025.03.14) |
References (3)
Change history (0)
No recorded changes yet.