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Fencer Vulns
high 8.4

CVE-2021-35245 json

Broken Access Control Vulnerability for SolarWinds Serv-U

published 2021-12-06 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21888

cvss
8.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

When a user has admin rights in Serv-U Console, the user can move, create and delete any files are able to be accessed on the Serv-U host machine.

Patch / fix

  • SolarWinds Serv-U FTP 15.2.5

Exploit prediction

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.4 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
NVD 3.1 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
NVD 2.0 6.8 AV:N/AC:L/Au:S/C:N/I:C/A:N

Affected products

  • SolarWinds Serv-U FTP

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.