CVE-2022-30526

HIGH

Zyxel Usg Flex 100w Firmware < 5.30 - Improper Privilege Management

Title source: rule

Description

A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.

Exploits (2)

nomisec WORKING POC 1 stars

by greek0x0 · poc

https://github.com/greek0x0/CVE-2022-30526

View Code ZIP pw:eip

metasploit WORKING POC EXCELLENT

by jbaines-r7 · rubypocunix

https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/zyxel_suid_cp_lpe.rb

View Code ZIP pw:eip

References (2)

[Vendor Advisory] https://www.zyxel.com/support/Zyxel-security-advisory-authenticated-directory-traversal-vulnerabilities-of-firewalls.shtml

[Exploit, Third Party Advisory, VDB Entry] http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html

Scores

CVSS v3 7.8

EPSS 0.0252

EPSS Percentile 85.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-269

Status published

Products (25)

zyxel/atp100_firmware 4.32 - 5.30

zyxel/atp100w_firmware 4.32 - 5.30

zyxel/atp200_firmware 4.32 - 5.30

zyxel/atp500_firmware 4.32 - 5.30

zyxel/atp700_firmware 4.32 - 5.30

zyxel/atp800_firmware 4.32 - 5.30

zyxel/usg20-vpn_firmware 4.30 - 5.30

zyxel/usg20w-vpn_firmware 4.16 - 5.30

zyxel/usg40_firmware 4.09 - 4.72

zyxel/usg40w_firmware 4.09 - 4.72

... and 15 more

Published Jul 19, 2022

Tracked Since Feb 18, 2026