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CVE-2022-34747

Quick assessment

Affected
Zyxel Zyxel NAS326 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 NAS326是中国合勤科技（Zyxel）公司的一款云存储 NAS。 Zyxel NAS326固件V5.21（AAZF.12）C0之前的版本存在安全漏洞，该漏洞源于其允许攻击者通过精心制作的UDP包利用格式化字符串的缺陷实现未经授权的远程代码执行。

CVSS 9.8 · Critical EPSS 1.73% · P76

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-34747

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A format string vulnerability in Zyxel NAS326 firmware versions prior to V5.21(AAZF.12)C0 could allow an attacker to achieve unauthorized remote code execution via a crafted UDP packet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部控制的格式字符串
Source: CVE Program / CVE List V5
Vulnerability Title
Zyxel NAS326 格式化字符串错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel NAS326是中国合勤科技（Zyxel）公司的一款云存储 NAS。 Zyxel NAS326固件V5.21（AAZF.12）C0之前的版本存在安全漏洞，该漏洞源于其允许攻击者通过精心制作的UDP包利用格式化字符串的缺陷实现未经授权的远程代码执行。
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 Zyxel NAS326 firmware < V5.21(AAZF.12)C0 -

II. Public POCs for CVE-2022-34747

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III. Intelligence Information for CVE-2022-34747

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Other References for CVE-2022-34747 (1)

IV. Related Vulnerabilities

Same vendor: Zyxel
Same weakness: CWE-134

V. Comments for CVE-2022-34747

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