What’s Vulnerable › Vulnerabilities

CVE-2021-3243

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-15 · updated 2026-06-17
• Weakness: CWE-79

Description

Wfilter ICF 5.0.117 contains a cross-site scripting (XSS) vulnerability. An attacker in the same LAN can craft a packet with a malicious User-Agent header to inject a payload in its logs, where an attacker can take over the system by through its plugin-running function.

Affected products

• Wfiltericf Wfilter Internet Content Filter: 5.0.117

References

• https://drivertom.blogspot.com/2021/01/wfilter-icf-0day-rce.html
• https://drivertom.blogspot.com/2021/01/wfilter-icf-0day-rce.html

Get alerted when CVE-2021-3243 or the next vulnerability affects your stack