CVE-2025-7673

A buffer overflow vulnerability in the URL parser of the zhttpd web server in Zyxel VMG8825-T50K firmware versions prior to V5.50(ABOM.5)C0 could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and potentially execute arbitrary code by sending a specially crafted HTTP request.

• zyxel emg3525-t50b firmware (< 5.50\(abpm.4\)c0) • zyxel emg3525-t50b firmware (< 5.50\(absl.0\)b8) • zyxel emg5523-t50b firmware (< 5.50\(abpm.4\)c0) • zyxel emg5523-t50b firmware (< 5.50\(absl.0\)b8) • zyxel emg5723-t50k firmware (< 5.50\(abom.5\)c0) • zyxel emg6726-b10a firmware (< 5.13\(abnp.6\).c) • zyxel ex3510-b0 firmware (< 5.17\(abup.3\)c0) • zyxel ex5510-b0 firmware (< 5.15\(abqx.3\)c0) • zyxel vmg1312-t20b firmware (< 5.50\(absb.3\)c0) • zyxel vmg3625-t50b firmware (< 5.50\(abpm.4\)c0) • zyxel vmg3925-b10b firmware (< 5.13\(aavf.16\)c) • zyxel vmg3925-b10c firmware (< 5.13\(aavf.16\)c) • zyxel vmg3927-b50a firmware (< 5.15\(abmt.5\)c0) • zyxel vmg3927-b60a firmware (< 5.15\(abmt.5\)c0) • zyxel vmg3927-b50b firmware (< 5.13\(ably.6\)c0) • zyxel vmg3927-t50k firmware (< 5.50\(abom.5\)c0) • zyxel vmg4005-b50b firmware (< 5.13\(abrl.5\)c0) • zyxel vmg4927-b50a firmware (< 5.13\(ably.6\)c0) • zyxel vmg8623-t50b firmware (< 5.50\(abpm.4\)c0) • zyxel vmg8825-b50a firmware (< 5.15\(abmt.5\)c0) • zyxel vmg8825-b60a firmware (< 5.15\(abmt.5\)c0) • zyxel vmg8825-bx0b firmware (< 5.17\(abny.5\)c0) • zyxel vmg8825-t50k firmware (< 5.50\(abom.5\)c0) • zyxel vmg8924-b10d firmware (< 5.13\(abgq.6\)c0) • zyxel xmg3927-b50a firmware (< 5.15\(abmt.5\)c0) • zyxel xmg8825-b50a firmware (< 5.17\(abmt.5\)c0)