CVE-2021-4226

RSFirewall < 1.1.25 - IP Block Bypass

CVSS 9.8 CRITICALEPSS 0.5%CWE-345

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.5%KEV nãoPoC —Patch —

Lifecycle

15 Dec 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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References