🔎 HIGH: CVE-2026-5021 in Tenda F453 v1.0.0.3 enables remote stack buffer overflow via /goform/PPTPUserSetting — no auth needed! PoC is public; patch/mitigate now to block total device compromise. https://radar.offseq.com/threat/cve-2026-5021-stack-based-buffer-overflow-in-tenda-f1fb8811 #OffSeq #CVE20265021 #Infosec #Router