CVE-2021-22678

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% 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-20

Description

Cscape (All versions prior to 9.90 SP4) lacks proper validation of user-supplied data when parsing project files. This could lead to memory corruption. An attacker could leverage this vulnerability to execute code in the context of the current process.

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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