CVE-2024-9197: Zyxel AX7501-b0 Firmware

Medium severity, CVSS 4.9. EPSS: 0.5% chance of exploitation in the next 30 days.

A post-authentication buffer overflow vulnerability in the parameter "action" of the CGI program in Zyxel VMG3625-T50B firmware versions through V5.50(ABPM.9.2)C0 could allow an authenticated attacker with administrator privileges to cause a temporary denial of service (DoS) condition against the web management interface by sending a crafted HTTP GET request to a vulnerable device if the function ZyEE is enabled.

Affected products

  • Zyxel AX7501-b0 Firmware: before 5.17\(abpc.5.3\)c0 (fixed in 5.17\(abpc.5.3\)c0)
  • Zyxel AX7501-b1 Firmware: before 5.17\(abpc.5.3\)c0 (fixed in 5.17\(abpc.5.3\)c0)
  • Zyxel DX3300-t0 Firmware: before 5.50\(aby.5.4\)c0 (fixed in 5.50\(aby.5.4\)c0)
  • Zyxel DX3300-t1 Firmware: before 5.50\(aby.5.4\)c0 (fixed in 5.50\(aby.5.4\)c0)
  • Zyxel DX3301-t0 Firmware: before 5.50\(aby.5.4\)c0 (fixed in 5.50\(aby.5.4\)c0)
  • Zyxel DX4510-b0 Firmware: before 5.17\(abyl.8\)c0 (fixed in 5.17\(abyl.8\)c0)
  • Zyxel DX4510-b1 Firmware: before 5.17\(abyl.8\)c0 (fixed in 5.17\(abyl.8\)c0)
  • Zyxel DX5401-b0 Firmware: before 5.17\(abyo.6.4\)c0 (fixed in 5.17\(abyo.6.4\)c0)
  • Zyxel DX5401-b1 Firmware: before 5.17\(abyo.6.4\)c0 (fixed in 5.17\(abyo.6.4\)c0)
  • Zyxel EE6510-10 Firmware: before 5.19\(acjq.1\)c0 (fixed in 5.19\(acjq.1\)c0)
  • Zyxel EMG3525-t50b Firmware: before 5.50\(abpm.9.3\)c0 (fixed in 5.50\(abpm.9.3\)c0)
  • Zyxel EMG5523-t50b Firmware: before 5.50\(abpm.9.3\)c0 (fixed in 5.50\(abpm.9.3\)c0)
  • Zyxel EMG5723-t50k Firmware: before 5.50\(abom.8.5\)c0 (fixed in 5.50\(abom.8.5\)c0)
  • Zyxel EX3300-t0 Firmware: before 5.50\(aby.5.4\)c0 (fixed in 5.50\(aby.5.4\)c0)
  • Zyxel EX3300-t1 Firmware: before 5.50\(aby.5.4\)c0 (fixed in 5.50\(aby.5.4\)c0)
  • Zyxel EX3301-t0 Firmware: before 5.50\(aby.5.4\)c0 (fixed in 5.50\(aby.5.4\)c0)
  • Zyxel EX3500-t0 Firmware: before 5.44\(achr.3\)c0 (fixed in 5.44\(achr.3\)c0)
  • Zyxel EX3501-t0 Firmware: before 5.44\(achr.3\)c0 (fixed in 5.44\(achr.3\)c0)
  • Zyxel EX3510-b0 Firmware: before 5.17\(abup.13\)c0 (fixed in 5.17\(abup.13\)c0)
  • Zyxel EX3510-b1 Firmware: before 5.17\(abup.13\)c0 (fixed in 5.17\(abup.13\)c0)
  • Zyxel EX3600-t0 Firmware: before 5.70\(acif.0.4\)c0 (fixed in 5.70\(acif.0.4\)c0)
  • Zyxel EX5401-b0 Firmware: before 5.17\(abyo.6.4\)c0 (fixed in 5.17\(abyo.6.4\)c0)
  • Zyxel EX5401-b1 Firmware: before 5.17\(abyo.6.4\)c0 (fixed in 5.17\(abyo.6.4\)c0)
  • Zyxel EX5501-b0 Firmware: before 5.17\(abry.5.3\)c0 (fixed in 5.17\(abry.5.3\)c0)
  • Zyxel EX5510-b0 Firmware: before 5.17\(abqx.11\)c0 (fixed in 5.17\(abqx.11\)c0)
  • and 11 more

Published 2024-12-03. Last modified 2026-06-17.