CVE-2021-40387 json
An issue was discovered in the server software in Kaseya Unitrends Backup Software before 10.5.5-2.
published 2021-09-01 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27564
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
An issue was discovered in the server software in Kaseya Unitrends Backup Software before 10.5.5-2. There is authenticated remote code execution.
Patch / fix
- kaseya unitrends_backup_software 10.5.5-2
Exploit prediction
2.43% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.0 | AV:N/AC:L/Au:S/C:C/I:C/A:C |
References
-
csirt.divd.nl
/csirt-divd-nl/cases/DIVD-2021-00014/
third-party-advisory
Sources
- CVE List CVE-2021-40387
- NVD CVE-2021-40387
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.