{"id":"CVE-2021-44971","title":"Multiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20_multi?AC5V1.0 Firmware V15.03.06.48_multi and so on","summary":"Multiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20_multi?AC5V1.0 Firmware V15.03.06.48_multi and so on. an attacker can obtain sensitive information, and even combine it with authenticate…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-697"],"vendor":"tenda","product":"ac15_firmware","affected":["ac15_firmware = 15.03.05.20_multi","ac5_firmware = 15.03.06.48_multi"],"published":"2022-01-28","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-44971","references":[{"url":"https://github.com/21Gun5/my_cve/blob/main/tenda/bypass_auth.md","label":"cve@mitre.org"},{"url":"http://ac15v10.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://tenda.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/21Gun5/my_cve/blob/main/tenda/bypass_auth.md","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.021,"epssPercentile":0.80891,"ingestedAt":"2026-07-06T02:09:23.195Z","slug":"CVE-2021-44971","body":"## Overview\n\nMultiple Tenda devices are affected by authentication bypass, such as AC15V1.0 Firmware V15.03.05.20_multi?AC5V1.0 Firmware V15.03.06.48_multi and so on. an attacker can obtain sensitive information, and even combine it with authenticated command injection to implement RCE.\n\n## Affected\n\n- `ac15_firmware = 15.03.05.20_multi`\n- `ac5_firmware = 15.03.06.48_multi`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.4,"exploitation":0,"ransomware":0},"changes":[]}