CVE-2021-35252 json
Common Key Vulnerability in Serv-U FTP Server
published 2022-12-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21895
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
Common encryption key appears to be used across all deployed instances of Serv-U FTP Server. Because of this an encrypted value that is exposed to an attacker can be simply recovered to plaintext.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- SolarWinds Serv-U FTP Server
Classification
References
-
solarwinds.com
/trust-center/security-advisories/CVE-2021-35252
patch, vendor-advisory
-
documentation.solarwinds.com
/en/success_center/servu/content/release_notes/servu_15-3-2_release_notes.htm
release-notes, vendor-advisory
-
cve.mitre.org
/cgi-bin/cvename.cgi?name=CVE-2021-35252
third-party-advisory
Sources
- CVE List CVE-2021-35252
- NVD CVE-2021-35252
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