CVE-2024-38267: Zyxel AX7501-b1 Firmware

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

An improper restriction of operations within the bounds of a memory buffer in the IPv6 address parser of the Zyxel VMG8825-T50K firmware versions through 5.50(ABOM.8)C0 could allow an authenticated attacker with administrator privileges to cause potential memory corruptions, resulting in a thread crash on an affected device.

Affected products

• Zyxel AX7501-b1 Firmware: before 5.17\(abpc.5.2\)c0 (fixed in 5.17\(abpc.5.2\)c0)
• Zyxel DX3300-t0 Firmware: before 5.50\(abvy.5.3\)c0 (fixed in 5.50\(abvy.5.3\)c0)
• Zyxel DX3300-t1 Firmware: before 5.50\(abvy.5.3\)c0 (fixed in 5.50\(abvy.5.3\)c0)
• Zyxel DX3301-t0 Firmware: before 5.50\(abvy.5.3\)c0 (fixed in 5.50\(abvy.5.3\)c0)
• Zyxel DX4510-b0 Firmware: before 5.17\(abyl.7\)c0 (fixed in 5.17\(abyl.7\)c0)
• Zyxel DX4510-b1 Firmware: before 5.17\(abyl.7\)c0 (fixed in 5.17\(abyl.7\)c0)
• Zyxel DX5401-b0 Firmware: before 5.17\(abyo.6.2\)c0 (fixed in 5.17\(abyo.6.2\)c0)
• Zyxel DX5401-b1 Firmware: before 5.17\(abyo.6.2\)c0 (fixed in 5.17\(abyo.6.2\)c0)
• Zyxel EMG3525-t50b Firmware: before 5.50\(abpm.9.2\)c0 (fixed in 5.50\(abpm.9.2\)c0)
• Zyxel EMG5523-t50b Firmware: before 5.50\(abpm.9.2\)c0 (fixed in 5.50\(abpm.9.2\)c0)
• Zyxel EMG5723-t50k Firmware: before 5.50\(abom.8.4\)c0 (fixed in 5.50\(abom.8.4\)c0)
• Zyxel EX3300-t0 Firmware: before 5.50\(abvy.5.3\)c0 (fixed in 5.50\(abvy.5.3\)c0)
• Zyxel EX3300-t1 Firmware: before 5.50\(abvy.5.3\)c0 (fixed in 5.50\(abvy.5.3\)c0)
• Zyxel EX3301-t0 Firmware: before 5.50\(abvy.5.3\)c0 (fixed in 5.50\(abvy.5.3\)c0)
• Zyxel EX3500-t0 Firmware: before 5.44\(achr.2\)c0 (fixed in 5.44\(achr.2\)c0)
• Zyxel EX3501-t0 Firmware: before 5.44\(achr.2\)c0 (fixed in 5.44\(achr.2\)c0)
• Zyxel EX3510-b0 Firmware: before 5.17\(abup.12\)c0 (fixed in 5.17\(abup.12\)c0)
• Zyxel EX3510-b1 Firmware: before 5.17\(abup.12\)c0 (fixed in 5.17\(abup.12\)c0)
• Zyxel EX3600-t0 Firmware: before 5.70\(acif.0.3\)c0 (fixed in 5.70\(acif.0.3\)c0)
• Zyxel EX5401-b0 Firmware: before 5.17\(abyo.6.2\)c0 (fixed in 5.17\(abyo.6.2\)c0)
• Zyxel EX5401-b1 Firmware: before 5.17\(abyo.6.2\)c0 (fixed in 5.17\(abyo.6.2\)c0)
• Zyxel EX5510-b0 Firmware: before 5.17\(abqx.10\)c0 (fixed in 5.17\(abqx.10\)c0)
• Zyxel EX5512-t0 Firmware: before 5.70\(aceg.3\)c2 (fixed in 5.70\(aceg.3\)c2)
• Zyxel EX5601-t0 Firmware: before 5.70\(acdz.3.2\)c0 (fixed in 5.70\(acdz.3.2\)c0)
• Zyxel EX5601-t1 Firmware: before 5.70\(acdz.3.2\)c0 (fixed in 5.70\(acdz.3.2\)c0)
• and 16 more

Published 2024-09-24. Last modified 2026-06-17.