Privilege Escalation Vulnerability in Zyxel Firewall Products
CVE-2022-30526

7.8HIGH

Key Information:

Vendor
Zyxel
Status
Usg Flex 100(w) Firmware
Usg Flex 200 Firmware
Usg Flex 500 Firmware
Usg Flex 700 Firmware
Vendor
CVE Published:
19 July 2022

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A privilege escalation vulnerability exists within the CLI command of specific Zyxel firewall products. This security flaw allows local attackers to execute operating system commands with elevated privileges in certain directories on affected devices. The vulnerability affects multiple firmware versions across the USG FLEX and VPN series, potentially leading to unauthorized access and control over system functionalities.

Affected Version(s)

ATP series firmware 4.32 through 5.30

USG 20(W)-VPN firmware 4.16 through 5.30

USG FLEX 100(W) firmware 4.50 through 5.30

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2022-30526
Created by greek0x0

References

https://www.zyxel.com/support/Zyxel-security-advisory-aut...
x_refsource_CONFIRM
http://packetstormsecurity.com/files/168202/Zyxel-Firewal...
x_refsource_MISC

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.