{"id":"CVE-2021-3243","aliases":["EUVD-2021-26582","GHSA-4g65-6f28-v2h9"],"status":"published","title":"Wfilter ICF 5.0.117 contains a cross-site scripting (XSS) vulnerability. An attacker in the same...","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.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00725,"percentile":0.54361,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-04-15T16:48:00Z","modified":"2026-06-17T04:04:51Z","products":[{"vendor":"wfiltericf","product":"wfilter_internet_content_filter"}],"references":[{"url":"https://drivertom.blogspot.com/2021/01/wfilter-icf-0day-rce.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3243"},{"url":"https://github.com/advisories/GHSA-4g65-6f28-v2h9"}],"sources":{"cve":[{"id":"CVE-2021-3243","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.","status":"published","published":"2021-04-15T16:48:00Z","modified":"2024-08-03T16:53:16.038Z","updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-26582","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.","status":"published","published":"2021-04-15T16:48:00Z","modified":"2024-08-03T16:53:16Z","updated_at":"2026-11-03T03:25:13.531128Z"}],"ghsa":[{"id":"GHSA-4g65-6f28-v2h9","title":"Wfilter ICF 5.0.117 contains a cross-site scripting (XSS) vulnerability. An attacker in the same...","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.","status":"published","published":"2022-05-24T17:47:44Z","modified":"2023-01-29T05:07:17Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:46:09.625645Z"}],"nvd":[{"id":"CVE-2021-3243","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.","status":"published","published":"2021-04-15T17:15:12.823Z","modified":"2026-06-17T04:04:51.187Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:52.03307Z"}]}}