CVE-2021-45837 in the critical feed 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 a specifically…
published 2022-04-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32555
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 16.1%
- EPSS 16.1% chance of exploitation in 30 days, percentile 96%
- public exploits
- 1
- Metasploit
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 a specifically crafted input to /tos/index.php?app/del.
Timeline
- First public exploit (Metasploit exploit/linux/http/terramaster_unauth_rce_cve_2021_45837)
- Published
Exploit prediction
16.09% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/linux/http/terramaster_unauth_rce_cve_2021_45837 TerraMaster TOS 4.2.15 or lower - RCE chain from unauthenticated to root via session crafting. metasploit exploit, excellent rank, 2021-12-24
- 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
Sources
- CVE List CVE-2021-45837
- NVD CVE-2021-45837
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.