Home/CVE/Common encryption key appears to be used across all deployed instances of Serv-U FTP Server. Because of this an encrypte
CVE

CVE-2021-35252

Common encryption key appears to be used across all deployed instances of Serv-U FTP Server. Because of this an encrypte

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.

HIGH · CVSS 7.5 EPSS 0.00289
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-798Use of Hard-coded Credentials
▤

Affected Products & Versions

1
solarwinds serv-u< 15.3.2
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Serv-U Process Pattern
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · psirt@solarwinds.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Dec 2022 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35252Third Party Advisory
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-3-2_release_notes.htmRelease NotesVendor Advisory
https://www.solarwinds.com/trust-center/security-advisories/CVE-2021-35252PatchVendor Advisory
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