CVE-2021-45840 json
It is possible to execute arbitrary commands as root in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) by sending specifically cr…
published 2022-04-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32558
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.9%
- EPSS 3.9% chance of exploitation in 30 days, percentile 90%
- public exploits
- 0
- none known
Summary
It is possible to execute arbitrary commands as root in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) by sending specifically crafted input to /tos/index.php?app/app_start_stop.
Exploit prediction
3.88% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- thatsn0tmy.site https://thatsn0tmy.site/posts/2021/12/how-to-summon-rces/ 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 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
References
-
thatsn0tmy.site
/posts/2021/12/how-to-summon-rces/
exploit, third-party-advisory
Sources
- CVE List CVE-2021-45840
- NVD CVE-2021-45840
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