{"id":"CVE-2021-41653","aliases":["EUVD-2021-28665","GHSA-8fx7-hx38-cm88"],"status":"published","title":"The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU...","description":"The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.76045,"percentile":0.99534,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-94"],"published":"2021-11-13T14:18:52Z","modified":"2026-07-09T01:17:03Z","exploits":[{"source":"nuclei","id":"CVE-2021-41653","title":"TP-Link - OS Command Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-41653.yaml"},{"source":"pocgithub","id":"likeww/CVE-2021-41653","title":"likeww/CVE-2021-41653","date":"2021-11-29","url":"https://github.com/likeww/CVE-2021-41653"}],"products":[{"vendor":"tp-link","product":"tl-wr840n_firmware"}],"references":[{"url":"https://www.tp-link.com/us/press/security-advisory/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://k4m1ll0.com/cve-2021-41653.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41653"},{"url":"http://tp-link.com"},{"url":"https://www.tp-link.com/us/press/security-advisory"},{"url":"https://github.com/advisories/GHSA-8fx7-hx38-cm88"}],"sources":{"cve":[{"id":"CVE-2021-41653","description":"The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.","status":"published","published":"2021-11-13T14:18:52Z","modified":"2026-07-09T00:15:01.371Z","updated_at":"2026-11-02T14:32:59.105382Z"}],"euvd":[{"id":"EUVD-2021-28665","description":"The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.","status":"published","published":"2021-11-13T14:18:52Z","modified":"2026-07-09T00:15:01Z","updated_at":"2026-11-02T18:20:08.60883Z"}],"ghsa":[{"id":"GHSA-8fx7-hx38-cm88","title":"The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU...","description":"The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.","status":"published","published":"2022-05-24T19:20:37Z","modified":"2026-07-05T03:31:48Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:09:15.466495Z"}],"nvd":[{"id":"CVE-2021-41653","description":"The PING function on the TP-Link TL-WR840N EU v5 router with firmware through TL-WR840N(EU)_V5_171211 is vulnerable to remote code execution via a crafted payload in an IP address input field.","status":"published","published":"2021-11-13T15:15:08.11Z","modified":"2026-07-09T01:17:03.77Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}