{"id":"CVE-2021-46010","title":"Totolink A3100R V5.9c.4577 suffers from Use of Insufficiently Random Values via the web configuration","summary":"Totolink A3100R V5.9c.4577 suffers from Use of Insufficiently Random Values via the web configuration. The SESSION_ID is predictable. An attacker can hijack a valid session and conduct further malicious operations.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-330"],"vendor":"totolink","product":"a3100r_firmware","affected":["a3100r_firmware = 5.9c.4577"],"published":"2022-03-30","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-46010","references":[{"url":"https://hackmd.io/Ynwm8NnQSiK0xm7QKuNteg","label":"cve@mitre.org"},{"url":"http://a3100r.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://totolink.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://hackmd.io/Ynwm8NnQSiK0xm7QKuNteg","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.01243,"epssPercentile":0.67435,"ingestedAt":"2026-07-06T02:09:23.460Z","slug":"CVE-2021-46010","body":"## Overview\n\nTotolink A3100R V5.9c.4577 suffers from Use of Insufficiently Random Values via the web configuration. The SESSION_ID is predictable. An attacker can hijack a valid session and conduct further malicious operations.\n\n## Affected\n\n- `a3100r_firmware = 5.9c.4577`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}