{"id":"CVE-2021-26827","aliases":["EUVD-2021-13612","GHSA-772c-rxr6-7vm7"],"status":"published","title":"Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers...","description":"Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers to cause a Denial-of-Service (DoS) by sending an HTTP request with a very long \"ssid\" parameter to the \"/userRpm/popupSiteSurveyRpm.html\" webpage, which crashes the router.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01703,"percentile":0.7758,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2021-04-14T13:53:21Z","modified":"2026-06-17T03:43:49Z","products":[{"vendor":"tp-link","product":"tl-wr2041\\+_firmware"}],"references":[{"url":"https://github.com/GD008/vuln/blob/main/tplink_wr2041/tplink_WR2041pv1.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26827"},{"url":"https://github.com/advisories/GHSA-772c-rxr6-7vm7"}],"sources":{"cve":[{"id":"CVE-2021-26827","description":"Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers to cause a Denial-of-Service (DoS) by sending an HTTP request with a very long \"ssid\" parameter to the \"/userRpm/popupSiteSurveyRpm.html\" webpage, which crashes the router.","status":"published","published":"2021-04-14T13:53:21Z","modified":"2024-08-03T20:33:40.972Z","updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13612","description":"Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers to cause a Denial-of-Service (DoS) by sending an HTTP request with a very long \"ssid\" parameter to the \"/userRpm/popupSiteSurveyRpm.html\" webpage, which crashes the router.","status":"published","published":"2021-04-14T13:53:21Z","modified":"2024-08-03T20:33:40Z","updated_at":"2026-11-03T03:24:50.84326Z"}],"ghsa":[{"id":"GHSA-772c-rxr6-7vm7","title":"Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers...","description":"Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers to cause a Denial-of-Service (DoS) by sending an HTTP request with a very long \"ssid\" parameter to the \"/userRpm/popupSiteSurveyRpm.html\" webpage, which crashes the router.","status":"published","published":"2022-05-24T17:47:33Z","modified":"2023-01-29T05:06:24Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:46:01.014857Z"}],"nvd":[{"id":"CVE-2021-26827","description":"Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers to cause a Denial-of-Service (DoS) by sending an HTTP request with a very long \"ssid\" parameter to the \"/userRpm/popupSiteSurveyRpm.html\" webpage, which crashes the router.","status":"published","published":"2021-04-14T14:15:13.46Z","modified":"2026-06-17T03:43:49.753Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:06:51.610648Z"}]}}