{"id":"CVE-2018-25317","aliases":["EUVD-2018-21838","GHSA-83gr-gjxh-xvrx"],"status":"published","title":"Tenda W3002R/A302/W309R V5.07.64_en Cookie Session Weakness DNS Change","description":"Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient session validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin language cookie to change primary and secondary DNS servers, redirecting user traffic to malicious DNS servers.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-07","score":0.00651,"percentile":0.51441,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-290"],"published":"2026-04-29T19:24:45Z","modified":"2026-09-30T18:17:51Z","products":[{"vendor":"tenda","product":"a302"},{"vendor":"tenda","product":"a302_firmware"},{"vendor":"tenda","product":"w3002r"},{"vendor":"tenda","product":"w3002r_firmware"},{"vendor":"tenda","product":"w309r"},{"vendor":"tenda","product":"w309r_firmware"}],"references":[{"url":"https://www.exploit-db.com/exploits/44380","tags":["exploit","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.vulncheck.com/advisories/tenda-w3002r-a302-w309r-64-en-cookie-session-weakness-dns-change","tags":["third-party-advisory","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-25317"},{"url":"https://github.com/advisories/GHSA-83gr-gjxh-xvrx"}],"sources":{"cve":[{"id":"CVE-2018-25317","title":"Tenda W3002R/A302/W309R V5.07.64_en Cookie Session Weakness DNS Change","description":"Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient session validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin language cookie to change primary and secondary DNS servers, redirecting user traffic to malicious DNS servers.","status":"published","published":"2026-04-29T19:24:45.523Z","modified":"2026-09-30T17:19:45.399Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"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":"cna"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:35:01.952568Z"}],"euvd":[{"id":"EUVD-2018-21838","description":"Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient session validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin language cookie to change primary and secondary DNS servers, redirecting user traffic to malicious DNS servers.","status":"published","published":"2026-04-29T19:24:45Z","modified":"2026-09-30T17:19:45Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T17:27:48.075372Z"}],"ghsa":[{"id":"GHSA-83gr-gjxh-xvrx","title":"Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness...","description":"Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient session validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin language cookie to change primary and secondary DNS servers, redirecting user traffic to malicious DNS servers.","status":"published","published":"2026-04-29T21:31:30Z","modified":"2026-04-29T21:31:38Z","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"},{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T15:07:51.754992Z"}],"nvd":[{"id":"CVE-2018-25317","description":"Tenda W3002R/A302/W309R wireless routers version V5.07.64_en contain a cookie session weakness vulnerability that allows unauthenticated attackers to modify DNS settings by exploiting insufficient session validation. Attackers can send GET requests to the /goform/AdvSetDns endpoint with a crafted admin language cookie to change primary and secondary DNS servers, redirecting user traffic to malicious DNS servers.","status":"published","published":"2026-04-29T20:16:27.663Z","modified":"2026-09-30T18:17:51.923Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"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":"secondary"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:05:01.494136Z"}]}}