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CVE-2025-1732

Quick assessment

Affected
Zyxel USG FLEX H series uOS firmware
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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（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 USG FLEX V1.32之前版本存在安全漏洞，该漏洞源于恢复功能权限管理不当，可能导致权限提升。

CVSS 6.7 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2025-1732

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An improper privilege management vulnerability in the recovery function of the Zyxel USG FLEX H series uOS firmware version V1.31 and earlier could allow an authenticated local attacker with administrator privileges to upload a crafted configuration file and escalate privileges on a vulnerable device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/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（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 USG FLEX V1.32之前版本存在安全漏洞，该漏洞源于恢复功能权限管理不当，可能导致权限提升。
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 H series uOS firmware <= V1.31 -

II. Public POCs for CVE-2025-1732

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III. Intelligence Information for CVE-2025-1732

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Other References for CVE-2025-1732 (1)

Same Patch Batch · Zyxel · 2025-04-22 · 3 CVEs total

CVE-2025-1731 7.8 HIGH Zyxel USG FLEX 安全漏洞
CVE-2025-3577 4.9 MEDIUM Zyxel AMG1302-T10B 安全漏洞

IV. Related Vulnerabilities

Same product: USG FLEX H series uOS firmware
Same vendor: Zyxel
Same weakness: CWE-269

V. Comments for CVE-2025-1732

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