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CVE-2022-43389

Quick assessment

Affected
Zyxel NR7101 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 NR7101是合勤（Zyxel）的一个路由器。 Zyxel NR7101固件V1.15（ACCC.3）C0之前的版本存在安全漏洞，该漏洞源于其web服务器库允许未经身份验证的攻击者通过缓冲区溢出执行某些操作系统命令或实现拒绝服务。

CVSS 8.6 · High EPSS 0.61% · P48
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I. Basic Information for CVE-2022-43389

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overflow vulnerability in the library of the web server in Zyxel NR7101 firmware prior to V1.15(ACCC.3)C0, which could allow an unauthenticated attacker to execute some OS commands or to cause denial-of-service (DoS) conditions on a vulnerable device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel NR7101 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel NR7101是合勤（Zyxel）的一个路由器。 Zyxel NR7101固件V1.15（ACCC.3）C0之前的版本存在安全漏洞，该漏洞源于其web服务器库允许未经身份验证的攻击者通过缓冲区溢出执行某些操作系统命令或实现拒绝服务。
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 NR7101 firmware < V1.15(ACCC.3)C0 -

II. Public POCs for CVE-2022-43389

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III. Intelligence Information for CVE-2022-43389

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Other References for CVE-2022-43389 (1)

Same Patch Batch · Zyxel · 2023-01-11 · 5 CVEs total

CVE-2022-43393 8.2 HIGH Zyxel GS1920 代码问题漏洞
CVE-2022-43391 6.5 MEDIUM Zyxel NR7101 安全漏洞
CVE-2022-43392 6.5 MEDIUM Zyxel NR7101 安全漏洞
CVE-2022-43390 5.4 MEDIUM Zyxel NR7101 操作系统命令注入漏洞

IV. Related Vulnerabilities

Same product: NR7101 firmware
Same vendor: Zyxel
Same weakness: CWE-120

V. Comments for CVE-2022-43389

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