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CVE-2022-43393

Quick assessment

Affected
Zyxel GS1920-24v2 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 GS1920是中国合勤（Zyxel）公司的一款交换机。 Zyxel GS1920-24v2 V4.70(ABMH.8)C0之前版本存在代码问题漏洞，该漏洞源于HTTP请求处理功能中未正确检查异常或异常情况，可能允许未经身份验证的攻击者破坏内存内容并导致拒绝服务(DoS)。

CVSS 8.2 · High EPSS 0.56% · P46

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-43393

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An improper check for unusual or exceptional conditions in the HTTP request processing function of Zyxel GS1920-24v2 firmware prior to V4.70(ABMH.8)C0, which could allow an unauthenticated attacker to corrupt the contents of the memory and result in a denial-of-service (DoS) condition 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:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel GS1920 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel GS1920是中国合勤（Zyxel）公司的一款交换机。 Zyxel GS1920-24v2 V4.70(ABMH.8)C0之前版本存在代码问题漏洞，该漏洞源于HTTP请求处理功能中未正确检查异常或异常情况，可能允许未经身份验证的攻击者破坏内存内容并导致拒绝服务(DoS)。
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 GS1920-24v2 firmware < V4.70(ABMH.8)C0 -

II. Public POCs for CVE-2022-43393

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III. Intelligence Information for CVE-2022-43393

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Other References for CVE-2022-43393 (1)

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

CVE-2022-43389 8.6 HIGH Zyxel NR7101 安全漏洞
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 vendor: Zyxel
Same weakness: CWE-754

V. Comments for CVE-2022-43393

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