CVE-2021-4226
CRITICALCVSS 9.8/10EPSS 0.51%
Last modified
CVE-2021-4226 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Rsjoomla | Rsfirewall\! | < 1.1.25 |
References
- https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352Exploit, Third Party Advisory
- https://wpscan.com/vulnerability/c0ed80c8-ebbf-4ed9-b02f-31660097c352Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2021-4226?
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.
How severe is CVE-2021-4226?
CVE-2021-4226 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.
How do I fix CVE-2021-4226?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
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Are you affected by CVE-2021-4226?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST