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CVE-2023-27989

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 V1.00(ABUV.8)C0之前版本存在安全漏洞。攻击者利用该漏洞通过向易受攻击的设备发送特制的HTTP请求来造成系统拒绝服务。

CVSS 6.5 · Medium EPSS 1.02% · P63

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2023-27989

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overflow vulnerability in the CGI program of the Zyxel NR7101 firmware versions prior to V1.00(ABUV.8)C0 could allow a remote authenticated attacker to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 V1.00(ABUV.8)C0之前版本存在安全漏洞。攻击者利用该漏洞通过向易受攻击的设备发送特制的HTTP请求来造成系统拒绝服务。
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 < V1.00(ABUV.8)C0 -

II. Public POCs for CVE-2023-27989

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III. Intelligence Information for CVE-2023-27989

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Other References for CVE-2023-27989 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2023-27989

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