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CVE-2023-35139

Quick assessment

Affected
Zyxel ATP series 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 ATP是中国合勤（Zyxel）公司的一款防火墙。 Zyxel ATP 存在跨站脚本漏洞，该漏洞源于CGI程序中存在跨站脚本（XSS）漏洞。受影响的产品和版本：Zyxel ATP series 5.10至5.37版本，USG FLEX series 5.00至5.37版本，USG FLEX 50(W) series 5.10至5.37版本，USG20(W)-VPN series 5.10至5.37版本，VPN series 5.00至5.37版本。

CVSS 5.2 · Medium EPSS 0.46% · P38
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I. Basic Information for CVE-2023-35139

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A cross-site scripting (XSS) vulnerability in the CGI program of the Zyxel ATP series firmware versions 5.10 through 5.37, USG FLEX series firmware versions 5.00 through 5.37, USG FLEX 50(W) series firmware versions 5.10 through 5.37, USG20(W)-VPN series firmware versions 5.10 through 5.37, and VPN series firmware versions 5.00 through 5.37, could allow an unauthenticated LAN-based attacker to store malicious scripts in a vulnerable device. A successful XSS attack could then result in the stored malicious scripts being executed to steal cookies when the user visits the specific CGI used for dumping ZTP logs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel ATP 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel ATP是中国合勤（Zyxel）公司的一款防火墙。 Zyxel ATP 存在跨站脚本漏洞，该漏洞源于CGI程序中存在跨站脚本（XSS）漏洞。受影响的产品和版本：Zyxel ATP series 5.10至5.37版本，USG FLEX series 5.00至5.37版本，USG FLEX 50(W) series 5.10至5.37版本，USG20(W)-VPN series 5.10至5.37版本，VPN series 5.00至5.37版本。
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 ATP series firmware versions 5.10 through 5.37 -
Zyxel USG FLEX series firmware versions 5.00 through 5.37 -
Zyxel USG FLEX 50(W) series firmware versions 5.10 through 5.37 -
Zyxel USG20(W)-VPN series firmware versions 5.10 through 5.37 -
Zyxel VPN series firmware versions 5.00 through 5.37 -

II. Public POCs for CVE-2023-35139

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III. Intelligence Information for CVE-2023-35139

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Other References for CVE-2023-35139 (1)

Same Patch Batch · Zyxel · 2023-11-28 · 9 CVEs total

CVE-2023-4398 7.5 HIGH Zyxel ATP 输入验证错误漏洞
CVE-2023-5960 5.5 MEDIUM Zyxel USG FLEX 安全漏洞
CVE-2023-5797 5.5 MEDIUM Zyxel ATP 安全漏洞
CVE-2023-5650 5.5 MEDIUM Zyxel ATP 安全漏洞
CVE-2023-37926 5.5 MEDIUM Zyxel ATP 安全漏洞
CVE-2023-37925 5.5 MEDIUM Zyxel ATP 安全漏洞
CVE-2023-35136 5.5 MEDIUM Zyxel ATP 输入验证错误漏洞
CVE-2023-4397 4.4 MEDIUM Zyxel ATP 安全漏洞

IV. Related Vulnerabilities

Same product: ATP series firmware
Same vendor: Zyxel
Same weakness: CWE-79

V. Comments for CVE-2023-35139

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