CVE-2021-35237 json
Clickjacking Vulnerability
published 2021-10-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-21880
- cvss
- 5.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
A missing HTTP header (X-Frame-Options) in Kiwi Syslog Server has left customers vulnerable to click jacking. Clickjacking is an attack that occurs when an attacker uses a transparent iframe in a window to trick a user into clicking on an actionable item, such as a button or link, to another server in which they have an identical webpage. The attacker essentially hijacks the user activity intended for the original server and sends them to the other server. This is an attack on both the user and the server.
Patch / fix
- SolarWinds Kiwi Syslog Server 9.7.2
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- SolarWinds Kiwi Syslog Server
Classification
- Weakness
-
- CWE-1021 Improper Restriction of Rendered UI Layers or Frames
References
-
documentation.solarwinds.com
/en/success_center/kss/content/release_notes/kss_9-8_release_notes.htm
release-notes, vendor-advisory
-
solarwinds.com
/trust-center/security-advisories/cve-2021-35237
vendor-advisory
Sources
- CVE List CVE-2021-35237
- NVD CVE-2021-35237
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