CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2025-7673
Critical (9.8) in zyxel. EPSS 0.7% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
- CWE
- CWE-120
- Published
- Modified
- Record from
- the NVD, synced
Affected
- zyxel:emg3525-t50b_firmware
- zyxel:emg5523-t50b_firmware
- zyxel:emg5723-t50k_firmware
- zyxel:emg6726-b10a_firmware
- zyxel:ex3510-b0_firmware
- zyxel:ex5510-b0_firmware
- zyxel:vmg1312-t20b_firmware
- zyxel:vmg3625-t50b_firmware
- zyxel:vmg3925-b10b_firmware
- zyxel:vmg3925-b10c_firmware
- zyxel:vmg3927-b50a_firmware
- zyxel:vmg3927-b50b_firmware
- zyxel:vmg3927-b60a_firmware
- zyxel:vmg3927-t50k_firmware
- zyxel:vmg4005-b50b_firmware
- zyxel:vmg4927-b50a_firmware
- zyxel:vmg8623-t50b_firmware
- zyxel:vmg8825-b50a_firmware
- zyxel:vmg8825-b60a_firmware
- zyxel:vmg8825-bx0b_firmware
- zyxel:vmg8825-t50k_firmware
- zyxel:vmg8924-b10d_firmware
- zyxel:xmg3927-b50a_firmware
- zyxel:xmg8825-b50a_firmware