Vulnerability Details : CVE-2021-27221
MikroTik RouterOS 6.47.9 allows remote authenticated ftp users to create or overwrite arbitrary .rsc files via the /export command. NOTE: the vendor's position is that this is intended behavior because of how user policies work
Products affected by CVE-2021-27221
- cpe:2.3:o:mikrotik:routeros:6.47.9:*:*:*:-:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-27221
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 51 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-27221
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.5
|
HIGH | AV:N/AC:L/Au:S/C:N/I:C/A:C |
8.0
|
9.2
|
NIST | |
|
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
2.8
|
5.2
|
NIST |
References for CVE-2021-27221
-
https://onovy.medium.com/routeros-user-with-just-ftp-policy-can-write-to-filesystem-cve-2021-27221-e3e45d780dfe
RouterOS: User with just “ftp” policy can create or overwrite arbitrary .rsc files via the /export command [CVE-2021–27221] | MediumExploit;Third Party Advisory
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