CVE-2021-35242 json
A valid CSRF token is present in response to an invalid request
published 2021-12-06 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21885
- cvss
- 8.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
Serv-U server responds with valid CSRFToken when the request contains only Session.
Patch / fix
- SolarWinds Serv-U Server 15.2.5
Exploit prediction
0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- SolarWinds Serv-U Server
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
documentation.solarwinds.com
/en/success_center/servu/content/release_notes/servu_15-2-5_release_notes.htm
release-notes, vendor-advisory
-
solarwinds.com
/trust-center/security-advisories/cve-2021-35242
broken-link
Sources
- CVE List CVE-2021-35242
- NVD CVE-2021-35242
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