CVE-2025-20154— Cisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability
Quick assessment
Affected
Cisco Cisco IOS XR Software
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 IOS和Cisco IOS XE都是美国思科（Cisco）公司的产品。Cisco IOS是一套为其网络设备开发的操作系统。Cisco IOS XE是一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS和Cisco IOS XE存在输入验证错误漏洞，该漏洞源于TWAMP协议处理不当，可能导致拒绝服务攻击。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-20154
Vulnerability Information
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Vulnerability Title
Cisco IOS, IOS XE and IOS XR Software TWAMP Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. For Cisco IOS XR Software, this vulnerability could cause the ipsla_ippm_server process to reload unexpectedly if debugs are enabled.
This vulnerability is due to out-of-bounds array access when processing specially crafted TWAMP control packets. An attacker could exploit this vulnerability by sending crafted TWAMP control packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Note: For Cisco IOS XR Software, only the ipsla_ippm_server process reloads unexpectedly and only when debugs are enabled. The vulnerability details for Cisco IOS XR Software are as follows: Security Impact Rating (SIR): Low CVSS Base Score: 3.7 CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS和Cisco IOS XE 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和Cisco IOS XE都是美国思科（Cisco）公司的产品。Cisco IOS是一套为其网络设备开发的操作系统。Cisco IOS XE是一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS和Cisco IOS XE存在输入验证错误漏洞，该漏洞源于TWAMP协议处理不当，可能导致拒绝服务攻击。
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 IOS XR Software | 6.5.3 | - |
|
II. Public POCs for CVE-2025-20154
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2025-20154 (1)
Same Patch Batch · Cisco · 2025-05-07 · 35 CVEs total
| CVE-2025-20188 | 10.0 CRITICAL | Cisco IOS XE 信任管理问题漏洞 |
| CVE-2025-20186 | 8.8 HIGH | Cisco IOS XE 操作系统命令注入漏洞 |
| CVE-2025-20182 | 8.6 HIGH | Cisco Adaptive Security Appliance Software, Firepower Threat Defense Software and IOS XE S |
| CVE-2025-20162 | 8.6 HIGH | Cisco IOS XE 资源管理错误漏洞 |
| CVE-2025-20164 | 8.3 HIGH | Cisco IOS 安全漏洞 |
| CVE-2025-20122 | 7.8 HIGH | Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability |
| CVE-2025-20192 | 7.7 HIGH | Cisco IOS XE 安全漏洞 |
| CVE-2025-20191 | 7.4 HIGH | Multiple Cisco Products Denial of Service Vulnerability |
| CVE-2025-20202 | 7.4 HIGH | Cisco IOS XE Wireless Controller Software 安全漏洞 |
| CVE-2025-20189 | 7.4 HIGH | Cisco IOS XE 安全漏洞 |
| CVE-2025-20140 | 7.4 HIGH | Cisco IOS XE 安全漏洞 |
| CVE-2025-20210 | 7.3 HIGH | Cisco Catalyst Center Unprotected API Endpoint |
| CVE-2025-20197 | 6.7 MEDIUM | Cisco IOS XE 输入验证错误漏洞 |
| CVE-2025-20200 | 6.7 MEDIUM | Cisco IOS XE 代码问题漏洞 |
| CVE-2025-20201 | 6.7 MEDIUM | Cisco IOS XE 代码问题漏洞 |
| CVE-2025-20190 | 6.5 MEDIUM | Cisco IOS XE Wireless Controller Software 访问控制错误漏洞 |
| CVE-2025-20193 | 6.5 MEDIUM | Cisco IOS XE 操作系统命令注入漏洞 |
| CVE-2025-20187 | 6.5 MEDIUM | Cisco SD-WAN Manager Software Arbitrary File Creation Vulnerability |
| CVE-2025-20155 | 6.0 MEDIUM | Cisco IOS XE 安全漏洞 |
| CVE-2025-20157 | 5.9 MEDIUM | Cisco Catalyst vManage Certificate Validation Vulnerability |
Showing top 20 of 35 CVEs. View all on vendor page → →
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V. Comments for CVE-2025-20154
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