VULNERABILITY INTELLIGENCE

CVE-2021-4226

CVSS score9.8 CRITICAL
EPSS probability0.55%
CISA KEVNot currently listed
Published2022-12-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

RSFirewall tries to identify the original IP address by looking at different HTTP headers. A bypass is possible due to the way it is implemented.

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-345

Primary references