CVE-2021-3243

6.1 mediumEPSS 0.7%

Medium (6.1) in wfiltericf wfilter internet content filter. EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.1 medium

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-04-15
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

wfiltericf:wfilter_internet_content_filter

References

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

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