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CVE-2022-30526

Quick assessment

Affected
Zyxel USG FLEX 100(W) firmware
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zyxel USG FLEX是中国合勤科技（Zyxel）公司的一款防火墙。提供灵活的 VPN 选项（IPsec、SSL 或 L2TP），为远程工作和管理提供灵活的安全远程访问。 Zyxel产品存在安全漏洞，该漏洞源于CLI命令中发现一个权限升级漏洞，这可能允许本地攻击者在受攻击设备的某些目录中以root权限执行一些操作系统命令。以下产品及版本受到影响：Zyxel USG FLEX 100(W)固件版本4.50至5.30、USG FLEX 200固件版本4.50至5.30、USG FLEX 500固件版本4

CVSS 7.8 · High EPSS 1.13% · P64

Public Exploits 1

Metasploit · 1 zyxel_suid_cp_lpe.rb [exploit]
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I. Basic Information for CVE-2022-30526

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel USG FLEX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel USG FLEX是中国合勤科技（Zyxel）公司的一款防火墙。提供灵活的 VPN 选项（IPsec、SSL 或 L2TP），为远程工作和管理提供灵活的安全远程访问。 Zyxel产品存在安全漏洞，该漏洞源于CLI命令中发现一个权限升级漏洞，这可能允许本地攻击者在受攻击设备的某些目录中以root权限执行一些操作系统命令。以下产品及版本受到影响：Zyxel USG FLEX 100(W)固件版本4.50至5.30、USG FLEX 200固件版本4.50至5.30、USG FLEX 500固件版本4
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zyxel USG FLEX 100(W) firmware 4.50 through 5.30 -
Zyxel USG FLEX 200 firmware 4.50 through 5.30 -
Zyxel USG FLEX 500 firmware 4.50 through 5.30 -
Zyxel USG FLEX 700 firmware 4.50 through 5.30 -
Zyxel ATP series firmware 4.32 through 5.30 -
Zyxel VPN series firmware 4.30 through 5.30 -
Zyxel USG FLEX 50(W) firmware 4.16 through 5.30 -
Zyxel USG 20(W)-VPN firmware 4.16 through 5.30 -
Zyxel USG/ZyWALL series firmware 4.09 through 4.72 -

II. Public POCs for CVE-2022-30526

# POC Description Source Link Shenlong Link
1 Metasploit exploit for CVE-2022-30526 https://github.com/greek0x0/CVE-2022-30526 POC Details
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III. Intelligence Information for CVE-2022-30526

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Exploits & Public PoCs for CVE-2022-30526 (1)

Other References for CVE-2022-30526 (1)

IV. Related Vulnerabilities

Same product: USG FLEX 100(W) firmware
Same vendor: Zyxel
Same weakness: CWE-269

V. Comments for CVE-2022-30526

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