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CVE-2025-20141— Cisco IOS XR Software Release 7.9.2 Denial of Service Vulnerabillity

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 XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR 7.9.2版本存在安全漏洞，该漏洞源于对特定数据包的错误处理，可能导致控制平面流量停止工作。

CVSS 7.4 · High EPSS 0.24% · P13
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I. Basic Information for CVE-2025-20141

Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Release 7.9.2 Denial of Service Vulnerabillity
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the handling of specific packets that are punted from a line card to a route processor in Cisco IOS XR Software Release 7.9.2 could allow an unauthenticated, adjacent attacker to cause control plane traffic to stop working on multiple Cisco IOS XR platforms.  This vulnerability is due to incorrect handling of packets that are punted to the route processor. An attacker could exploit this vulnerability by sending traffic, which must be handled by the Linux stack on the route processor, to an affected device. A successful exploit could allow the attacker to cause control plane traffic to stop working, resulting in a denial of service (DoS) condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XR是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR 7.9.2版本存在安全漏洞，该漏洞源于对特定数据包的错误处理，可能导致控制平面流量停止工作。
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 7.9.2 -

II. Public POCs for CVE-2025-20141

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III. Intelligence Information for CVE-2025-20141

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Vendor Advisories for CVE-2025-20141 (1)

Same Patch Batch · Cisco · 2025-03-12 · 10 CVEs total

CVE-2025-20138 8.8 HIGH Cisco IOS XR Software CLI Privilege Escalation Vulnerability
CVE-2025-20146 8.6 HIGH Cisco IOS XR Software for ASR 9000 Series Routers Layer 3 Multicast Routing Denial of Serv
CVE-2025-20142 8.6 HIGH Cisco IOS XR Software for ASR 9000 Series Routers L2VPN Denial of Service Vulnerability
CVE-2025-20115 8.6 HIGH Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability
CVE-2025-20209 7.5 HIGH Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
CVE-2025-20177 6.7 MEDIUM Cisco IOS XR Software Image Verification Bypass Vulnerability
CVE-2025-20143 6.7 MEDIUM Cisco IOS XR Software Secure Boot Bypass Vulnerability
CVE-2025-20145 5.8 MEDIUM Cisco IOS XR Software Access Control List Bypass Vulnerability
CVE-2025-20144 4.0 MEDIUM Cisco IOS XR Software Access Control List Bypass Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-770

V. Comments for CVE-2025-20141

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