CVE-2023-6398

A post-authentication command injection vulnerability in the file upload binary in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1, NWA50AX firmware versions through 6.29(ABYW.3), WAC500 firmware versions through 6.65(ABVS.1), WAX300H firmware versions through 6.60(ACHF.1), and WBE660S firmware versions through 6.65(ACGG.1) could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device via FTP. It has a CVSS v3.1 base score of 7.2 (HIGH).

CVE-2023-6398 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

CVE-2023-6398 affects products from zyxel, specifically: atp100, atp100_firmware, atp100w, atp100w_firmware, atp200, atp200_firmware, atp500, atp500_firmware, atp700, atp700_firmware, atp800, atp800_firmware, nwa110ax, nwa110ax_firmware, nwa1123acv3, nwa1123acv3_firmware, nwa210ax, nwa210ax_firmware, nwa220ax-6e, nwa220ax-6e_firmware, nwa50ax, nwa50ax-pro, nwa50ax-pro_firmware, nwa50ax_firmware, nwa55axe, nwa55axe_firmware, nwa90ax, nwa90ax-pro, nwa90ax-pro_firmware, nwa90ax_firmware, uos, usg20-vpn, usg20-vpn_firmware, usg20w-vpn, usg20w-vpn_firmware, usg_flex_100, usg_flex_100_firmware, usg_flex_100ax, usg_flex_100ax_firmware, usg_flex_100h, usg_flex_100h_firmware, usg_flex_100hp, usg_flex_100w, usg_flex_100w_firmware, usg_flex_200, usg_flex_200_firmware, usg_flex_200h, usg_flex_200h_firmware, usg_flex_200hp, usg_flex_200hp_firmware, usg_flex_50, usg_flex_500, usg_flex_500_firmware, usg_flex_500h, usg_flex_500h_firmware, usg_flex_50_firmware, usg_flex_50w, usg_flex_50w_firmware, usg_flex_700, usg_flex_700_firmware, usg_flex_700h, usg_flex_700h_firmware, wac500, wac500_firmware, wac500h, wac500h_firmware, wax300h, wax300h_firmware, wax510d, wax510d_firmware, wax610d, wax610d_firmware, wax620d-6e, wax620d-6e_firmware, wax630s, wax630s_firmware, wax640s-6e, wax640s-6e_firmware, wax650s, wax650s_firmware, wax655e, wax655e_firmware, wbe660s, wbe660s_firmware. Check the affected products table above for specific version ranges.

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.