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CVE-2023-20126— Cisco SPA112 2-Port Phone Adapters Remote Command Execution Vulnerability

Quick assessment

Affected
Cisco Cisco Small Business IP Phones
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco SPA112 2-Port Phone Adapter是美国思科（Cisco）公司的一款电话适配器。 Cisco SPA112 2-Port Phone Adapters存在安全漏洞，该漏洞源于固件升级功能中缺少身份验证过程，可能允许攻击者以完全权限在受影响的设备上执行任意代码。

CVSS 9.8 · Critical EPSS 36.68% · P98
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I. Basic Information for CVE-2023-20126

Vulnerability Information
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Vulnerability Title
Cisco SPA112 2-Port Phone Adapters Remote Command Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the web-based management interface of Cisco SPA112 2-Port Phone Adapters could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to a missing authentication process within the firmware upgrade function. An attacker could exploit this vulnerability by upgrading an affected device to a crafted version of firmware. A successful exploit could allow the attacker to execute arbitrary code on the affected device with full privileges. Cisco has not released firmware updates to address this vulnerability.
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
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco SPA112 2-Port Phone Adapter 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco SPA112 2-Port Phone Adapter是美国思科（Cisco）公司的一款电话适配器。 Cisco SPA112 2-Port Phone Adapters存在安全漏洞，该漏洞源于固件升级功能中缺少身份验证过程，可能允许攻击者以完全权限在受影响的设备上执行任意代码。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Small Business IP Phones n/a -

II. Public POCs for CVE-2023-20126

# POC Description Source Link Shenlong Link
1 PoC for CVE-2023-20126 https://github.com/fullspectrumdev/RancidCrisco POC Details
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III. Intelligence Information for CVE-2023-20126

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Vendor Advisories for CVE-2023-20126 (1)

IV. Related Vulnerabilities

Same product: Cisco Small Business IP Phones
Same vendor: Cisco
Same weakness: CWE-306

V. Comments for CVE-2023-20126

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