{"cve_id":"CVE-2026-7273","published":"2026-06-16T03:16:13.557000+00:00","last_modified":"2026-10-25T23:10:00.167000+00:00","vuln_status":"Analyzed","description":"A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","base_score":8.8,"base_severity":"HIGH","attack_vector":"ADJACENT_NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-121"],"in_kev":true,"kev_date_added":"2026-09-21","kev_ransomware":false,"epss_score":0.02778,"epss_percentile":0.8637,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"ADJACENT","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-10-28T03:37:13.940719+00:00","first_seen":"2026-06-16T03:16:13.557000+00:00","kev_first_seen":"2026-09-22T06:44:39.254185+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":"2026-10-02T03:22:09.438791+00:00","vendors":["zyxel"],"products":["gs1900-10hp","gs1900-10hp_firmware","gs1900-16","gs1900-16_firmware","gs1900-24","gs1900-24_firmware","gs1900-24e","gs1900-24e_firmware","gs1900-24ep","gs1900-24ep_firmware","gs1900-24hpv2","gs1900-24hpv2_firmware","gs1900-48","gs1900-48_firmware","gs1900-48hpv2","gs1900-48hpv2_firmware","gs1900-8","gs1900-8_firmware","gs1900-8hp","gs1900-8hp_firmware"],"affected":[{"vendor":"zyxel","product":"gs1900-10hp_firmware","ranges":["< 2.90\\(aazi.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-16_firmware","ranges":["< 2.90\\(aahj.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-24_firmware","ranges":["< 2.90\\(aahl.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-24e_firmware","ranges":["< 2.90\\(aahk.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-24ep_firmware","ranges":["< 2.90\\(abto.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-24hpv2_firmware","ranges":["< 2.90\\(abtp.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-48_firmware","ranges":["< 2.90\\(aahn.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-48hpv2_firmware","ranges":["< 2.90\\(abtq.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-8_firmware","ranges":["< 2.90\\(aahh.2\\)c0"]},{"vendor":"zyxel","product":"gs1900-8hp_firmware","ranges":["< 2.90\\(aahi.2\\)c0"]}]}