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CVE-2025-20165— Cisco BroadWorks SIP Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco BroadWorks
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.

Cisco BroadWorks是美国思科（Cisco）公司的一个运营商级统一通信软件平台。用于在任何类型的有线或无线网络架构上部署来自公共网络平台的云呼叫。 Cisco BroadWorks存在代码问题漏洞，该漏洞源于对某些SIP请求的内存处理不当，导致未认证远程攻击者可通过发送大量SIP请求使处理停止，造成服务拒绝攻击。

CVSS 7.5 · High EPSS 0.86% · P57
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I. Basic Information for CVE-2025-20165

Vulnerability Information
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Vulnerability Title
Cisco BroadWorks SIP Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the SIP processing subsystem of Cisco BroadWorks could allow an unauthenticated, remote attacker to halt the processing of incoming SIP requests, resulting in a denial of service (DoS) condition. This vulnerability is due to improper memory handling for certain SIP requests. An attacker could exploit this vulnerability by sending a high number of SIP requests to an affected system. A successful exploit could allow the attacker to exhaust the memory that was allocated to the Cisco BroadWorks Network Servers that handle SIP traffic. If no memory is available, the Network Servers can no longer process incoming requests, resulting in a DoS condition that requires manual intervention to recover.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco BroadWorks 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco BroadWorks是美国思科（Cisco）公司的一个运营商级统一通信软件平台。用于在任何类型的有线或无线网络架构上部署来自公共网络平台的云呼叫。 Cisco BroadWorks存在代码问题漏洞，该漏洞源于对某些SIP请求的内存处理不当，导致未认证远程攻击者可通过发送大量SIP请求使处理停止，造成服务拒绝攻击。
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
Cisco Cisco BroadWorks 22.0 -

II. Public POCs for CVE-2025-20165

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III. Intelligence Information for CVE-2025-20165

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Vendor Advisories for CVE-2025-20165 (2)

Security Blog Posts for CVE-2025-20165 (1)

Same Patch Batch · Cisco · 2025-01-22 · 3 CVEs total

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CVE-2025-20128 5.3 MEDIUM ClamAV OLE2 File Format Decryption Denial of Service Vulnerability

IV. Related Vulnerabilities

Same product: Cisco BroadWorks
Same vendor: Cisco
Same weakness: CWE-789

V. Comments for CVE-2025-20165

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