What’s Vulnerable › Vulnerabilities

CVE-2021-28023

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-11-08 · updated 2026-06-17
• Weakness: CWE-434

Description

Arbitrary file upload in Service import feature in ServiceTonic Helpdesk software version < 9.0.35937 allows a malicious user to execute JSP code by uploading a zip that extracts files in relative paths.

Affected products

• Servicetonic: before 9.0.035937 — fixed in 9.0.035937

How to fix

Upgrade to a fixed version: Servicetonic 9.0.035937. Check the vendor advisory for mitigations.

References

• https://www.servicetonic.com/
• https://www.srlabs.de/bites/chaining-three-zero-day-exploits-in-itsm-software-servicetonic-for-remote-code-execution
• https://www.servicetonic.com/
• https://www.srlabs.de/bites/chaining-three-zero-day-exploits-in-itsm-software-servicetonic-for-remote-code-execution

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