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CVE-2022-26414

Quick assessment

Affected
Zyxel VMG3312-T20A 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 VMG3312-T20A是中国合勤科技（Zyxel）公司的一款先进的 VDSL2 网关。 Zyxel VMG3312-T20A 5.30(ABFX.5)C0 版本存在安全漏洞，该漏洞源于一些内部函数中发现了一个潜在的缓冲区溢出漏洞。经过身份验证的本地攻击者可以利用该漏洞导致拒绝服务。

CVSS 6.0 · Medium EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2022-26414

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A potential buffer overflow vulnerability was identified in some internal functions of Zyxel VMG3312-T20A firmware version 5.30(ABFX.5)C0, which could be exploited by a local authenticated attacker to cause a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/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 VMG3312-T20A 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zyxel VMG3312-T20A是中国合勤科技（Zyxel）公司的一款先进的 VDSL2 网关。 Zyxel VMG3312-T20A 5.30(ABFX.5)C0 版本存在安全漏洞，该漏洞源于一些内部函数中发现了一个潜在的缓冲区溢出漏洞。经过身份验证的本地攻击者可以利用该漏洞导致拒绝服务。
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 VMG3312-T20A firmware V5.30(ABFX.5)C0 -

II. Public POCs for CVE-2022-26414

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III. Intelligence Information for CVE-2022-26414

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Other References for CVE-2022-26414 (1)

Same Patch Batch · Zyxel · 2022-04-11 · 3 CVEs total

CVE-2022-26413 8.0 HIGH Zyxel VMG3312-T20A 操作系统命令注入漏洞
CVE-2022-0556 7.3 HIGH Zyxel AP Configurator 安全漏洞

IV. Related Vulnerabilities

Same product: VMG3312-T20A firmware
Same vendor: Zyxel
Same weakness: CWE-120

V. Comments for CVE-2022-26414

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