CVE-2021-22682

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-23 · updated 2026-06-17
Weakness: CWE-284

Description

Cscape (All versions prior to 9.90 SP4) is configured by default to be installed for all users, which allows full permissions, including read/write access. This may allow unprivileged users to modify the binaries and configuration files and lead to local privilege escalation.

Affected products

Horner Automation Cscape: before 9.90; 9.90, 9.90-sp1, 9.90-sp2, 9.90-sp3 — fixed in 9.90

How to fix

Upgrade to a fixed version: Horner Automation Cscape 9.90. Check the vendor advisory for mitigations.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-112-01
https://us-cert.cisa.gov/ics/advisories/icsa-21-112-01

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