CVE-2021-35223 json
Execute Command Function Allows Remote Code Execution (RCE)Vulnerability
published 2021-08-31 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21866
- cvss
- 8.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.9%
- EPSS 2.9% chance of exploitation in 30 days, percentile 87%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- solarwinds serv-u 15.2.4
Exploit prediction
2.94% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| 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 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- SolarWinds Serv-U
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
support.solarwinds.com
/SuccessCenter/s/article/Execute-Command-Function-Allows-Remote-Code-Execution-RCE-Vulnerability-CVE-2021-3522
vendor-advisory
-
documentation.solarwinds.com
/en/success_center/servu/content/release_notes/servu_15-2-4_release_notes.htm
release-notes, vendor-advisory
-
solarwinds.com
/trust-center/security-advisories/cve-2021-35223
vendor-advisory
Sources
- CVE List CVE-2021-35223
- NVD CVE-2021-35223
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