High severity · published Aug 31, 2021
CVE-2021-35223
The Serv-U File Server allows for events such as user login failures to be audited by executing a command
8.8
CVSS
2.9%
EPSS
No
On KEV
Description
The Serv-U File Server allows for events such as user login failures to be audited by executing a command. This command can be supplied with parameters that can take the form of user string variables, allowing remote code execution.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.9% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Serv-U · SolarWinds
before 15.2.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-35223
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-35223
Release Notes
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-2-4_release_notes.htm
Vendor Advisory
https://support.solarwinds.com/SuccessCenter/s/article/Execute-Command-Function-Allows-Remote-Code-Execution-RCE-Vulnerability-CVE-2021-35223?language=en_US
Vendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/cve-2021-35223
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