{"cve":"CVE-2023-28768","nvd":{"published":"2023-08-14T17:15:10.157","modified":"2026-06-17T05:48:43.763","status":"Modified","description":"Improper frame handling in the Zyxel XGS2220-30 firmware version V4.80(ABXN.1), XMG1930-30 firmware version V4.80(ACAR.1), and XS1930-10 firmware version V4.80(ABQE.1) could allow an unauthenticated LAN-based attacker to cause denial-of-service (DoS) conditions by sending crafted frames to an affected switch.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-755"],"references":["https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dos-vulnerability-of-xgs2220-xmg1930-and-xs1930-series-switches","https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-dos-vulnerability-of-xgs2220-xmg1930-and-xs1930-series-switches"],"products":["zyxel:xgs2220-30_firmware","zyxel:xgs2220-30f_firmware","zyxel:xgs2220-30hp_firmware","zyxel:xgs2220-54_firmware","zyxel:xgs2220-54fp_firmware","zyxel:xgs2220-54hp_firmware","zyxel:xmg1930-30_firmware","zyxel:xmg1930-30hp_firmware","zyxel:xs1930-10_firmware","zyxel:xs1930-12f_firmware","zyxel:xs1930-12hp_firmware"],"source":"nvd","synced_at":"2026-10-19T21:39:14.809778102+00:00"},"epss":{"cve":"CVE-2023-28768","score":0.00303,"percentile":0.23071,"date":"2026-10-31"},"kev":null,"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."]}