A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.
2023-05-24T13:15:09.560
2025-01-27T21:44:27.713
Analyzed
CVSSv3.1: 9.8 (CRITICAL)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | zyxel | atp100_firmware | < 5.36 | Yes |
| Operating System | zyxel | atp100_firmware | 5.36 | Yes |
| Operating System | zyxel | atp100_firmware | 5.36 | Yes |
| Hardware | zyxel | atp100 | - | No |
| Operating System | zyxel | atp200_firmware | < 5.36 | Yes |
| Operating System | zyxel | atp200_firmware | 5.36 | Yes |
| Operating System | zyxel | atp200_firmware | 5.36 | Yes |
| Hardware | zyxel | atp200 | - | No |
| Operating System | zyxel | atp500_firmware | < 5.36 | Yes |
| Operating System | zyxel | atp500_firmware | 5.36 | Yes |
| Operating System | zyxel | atp500_firmware | 5.36 | Yes |
| Hardware | zyxel | atp500 | - | No |
| Operating System | zyxel | atp100w_firmware | < 5.36 | Yes |
| Operating System | zyxel | atp100w_firmware | 5.36 | Yes |
| Operating System | zyxel | atp100w_firmware | 5.36 | Yes |
| Hardware | zyxel | atp100w | - | No |
| Operating System | zyxel | atp700_firmware | < 5.36 | Yes |
| Operating System | zyxel | atp700_firmware | 5.36 | Yes |
| Operating System | zyxel | atp700_firmware | 5.36 | Yes |
| Hardware | zyxel | atp700 | - | No |
| Operating System | zyxel | atp800_firmware | < 5.36 | Yes |
| Operating System | zyxel | atp800_firmware | 5.36 | Yes |
| Operating System | zyxel | atp800_firmware | 5.36 | Yes |
| Hardware | zyxel | atp800 | - | No |
| Operating System | zyxel | usg_flex_100_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_flex_100_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_flex_100_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_flex_100 | - | No |
| Operating System | zyxel | usg_flex_50_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_flex_50_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_flex_50_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_flex_50 | - | No |
| Operating System | zyxel | usg_flex_200_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_flex_200_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_flex_200_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_flex_200 | - | No |
| Operating System | zyxel | usg_flex_500_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_flex_500_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_flex_500_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_flex_500 | - | No |
| Operating System | zyxel | usg_flex_700_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_flex_700_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_flex_700_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_flex_700 | - | No |
| Operating System | zyxel | usg_flex_100_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_flex_100w_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_flex_100w_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_flex_100w | - | No |
| Operating System | zyxel | usg_flex_50w_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_flex_50w_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_flex_50w_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_flex_50w | - | No |
| Operating System | zyxel | usg_20w-vpn_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg_20w-vpn_firmware | 5.36 | Yes |
| Operating System | zyxel | usg_20w-vpn_firmware | 5.36 | Yes |
| Hardware | zyxel | usg_20w-vpn | - | No |
| Operating System | zyxel | vpn100_firmware | < 5.36 | Yes |
| Operating System | zyxel | vpn100_firmware | 5.36 | Yes |
| Operating System | zyxel | vpn100_firmware | 5.36 | Yes |
| Hardware | zyxel | vpn100 | - | No |
| Operating System | zyxel | vpn50_firmware | < 5.36 | Yes |
| Operating System | zyxel | vpn50_firmware | 5.36 | Yes |
| Operating System | zyxel | vpn50_firmware | 5.36 | Yes |
| Hardware | zyxel | vpn50 | - | No |
| Operating System | zyxel | vpn300_firmware | < 5.36 | Yes |
| Operating System | zyxel | vpn300_firmware | 5.36 | Yes |
| Operating System | zyxel | vpn300_firmware | 5.36 | Yes |
| Hardware | zyxel | vpn300 | - | No |
| Operating System | zyxel | vpn1000_firmware | < 5.36 | Yes |
| Operating System | zyxel | vpn1000_firmware | 5.36 | Yes |
| Operating System | zyxel | vpn1000_firmware | 5.36 | Yes |
| Hardware | zyxel | vpn1000 | - | No |
| Operating System | zyxel | usg20-vpn_firmware | < 5.36 | Yes |
| Operating System | zyxel | usg20-vpn_firmware | 5.36 | Yes |
| Operating System | zyxel | usg20-vpn_firmware | 5.36 | Yes |
| Hardware | zyxel | usg20-vpn | - | No |
| Operating System | zyxel | usg_40_firmware | < 4.73 | Yes |
| Operating System | zyxel | usg_40_firmware | 4.73 | Yes |
| Operating System | zyxel | usg_40_firmware | 4.73 | Yes |
| Hardware | zyxel | usg_40 | - | No |
| Operating System | zyxel | usg_40w_firmware | < 4.73 | Yes |
| Operating System | zyxel | usg_40w_firmware | 4.73 | Yes |
| Operating System | zyxel | usg_40w_firmware | 4.73 | Yes |
| Hardware | zyxel | usg_40w | - | No |
| Operating System | zyxel | usg_60w_firmware | < 4.73 | Yes |
| Operating System | zyxel | usg_60w_firmware | 4.73 | Yes |
| Operating System | zyxel | usg_60w_firmware | 4.73 | Yes |
| Hardware | zyxel | usg_60w | - | No |
| Operating System | zyxel | usg_60_firmware | < 4.73 | Yes |
| Operating System | zyxel | usg_60_firmware | 4.73 | Yes |
| Operating System | zyxel | usg_60_firmware | 4.73 | Yes |
| Hardware | zyxel | usg_60 | - | No |