CVE-2021-28023 json
Arbitrary file upload in Service import feature in ServiceTonic Helpdesk software version < 9.0.35937 allows a malicious user to execute JS…
published 2021-11-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14741
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- servicetonic servicetonic 9.0.035937
Exploit prediction
1.35% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- srlabs.de https://www.srlabs.de/bites/chaining-three-zero-day-exploits-in-itsm-software-servicetonic-for-remote-code-execution referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
srlabs.de
/bites/chaining-three-zero-day-exploits-in-itsm-software-servicetonic-for-remote-code-execution
exploit, third-party-advisory
-
servicetonic.com
/
product
Sources
- CVE List CVE-2021-28023
- NVD CVE-2021-28023
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.