{"id":"CVE-2026-3622","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-3622","generatedAt":"2026-10-28T02:11:10.616Z","title":"The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service.","description":"The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service.  \n\nSuccessful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition. \nThis vulnerability affects TL-WR841N v14 < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).","published":"2026-03-26T21:17:10.000Z","lastModified":"2026-06-17T10:43:53.000Z","status":"Analyzed","sourceIdentifier":"f23511db-6c3e-4e32-a477-6aa17d310630","cvss":{"version":"4.0","score":7.1,"severity":"HIGH","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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/M"},"cwe":["CWE-125"],"affected":["tp-link/tl-wr841n firmware"],"epss":{"score":0.00372,"percentile":0.30925,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware","tags":["Product"],"source":"f23511db-6c3e-4e32-a477-6aa17d310630"},{"url":"https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware","tags":["Product"],"source":"f23511db-6c3e-4e32-a477-6aa17d310630"},{"url":"https://www.tp-link.com/us/support/faq/5033/","tags":["Vendor Advisory"],"source":"f23511db-6c3e-4e32-a477-6aa17d310630"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-3622","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}