{"cve":"CVE-2026-7273","nvd":{"published":"2026-06-16T03:16:13.557","modified":"2026-10-25T23:10:00.167","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-121"],"references":["https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-stack-based-buffer-overflow-vulnerability-in-gs1900-series-switches-06-16-2026","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7273","https://www.greynoise.io/blog/open-season-on-kapibala-attacker-steals-government-records-wordpress-exploitation"],"products":["zyxel:gs1900-10hp_firmware","zyxel:gs1900-16_firmware","zyxel:gs1900-24_firmware","zyxel:gs1900-24e_firmware","zyxel:gs1900-24ep_firmware","zyxel:gs1900-24hpv2_firmware","zyxel:gs1900-48_firmware","zyxel:gs1900-48hpv2_firmware","zyxel:gs1900-8_firmware","zyxel:gs1900-8hp_firmware"],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-7273","score":0.02778,"percentile":0.86272,"date":"2026-10-25"},"kev":{"cve":"CVE-2026-7273","date_added":"2026-09-21","due_date":"2026-09-24","vendor":"Zyxel","product":"GS1900 Series Switches","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}