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CVE-2025-20172

Quick assessment

Affected
Cisco IOS
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等都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS、Cisco IOS XE和Cisco IOS XR存在安全漏洞，该漏洞源于解析请求时错误处理不当，可致设备重启或SNMP进程中断。

CVSS 7.7 · High EPSS 0.76% · P54
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I. Basic Information for CVE-2025-20172

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the SNMP subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an authenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper error handling when parsing SNMP requests. An attacker could exploit this vulnerability by sending a crafted SNMP request to an affected device. For Cisco IOS and IOS XE Software, a successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. For Cisco IOS XR Software, a successful exploit could allow the attacker to cause the SNMP process to restart, resulting in an interrupted SNMP response from an affected device. Devices that are running Cisco IOS XR Software will not reload.  This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMP v2c or earlier, the attacker must know a valid read-write or read-only SNMP community string for the affected system. To exploit this vulnerability through SNMP v3, the attacker must have valid SNMP user credentials for the affected system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS、Cisco IOS XE和Cisco IOS XR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS等都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS、Cisco IOS XE和Cisco IOS XR存在安全漏洞，该漏洞源于解析请求时错误处理不当，可致设备重启或SNMP进程中断。
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 IOS 12.2(33)SRE1 -
Cisco Cisco IOS XR Software 7.0.1 -
Cisco Cisco IOS XE Software 3.7.0S -

II. Public POCs for CVE-2025-20172

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III. Intelligence Information for CVE-2025-20172

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Vendor Advisories for CVE-2025-20172 (1)

Same Patch Batch · Cisco · 2025-02-05 · 18 CVEs total

CVE-2025-20124 9.9 CRITICAL Cisco Identity Services Engine Java Deserialization Vulnerability
CVE-2025-20125 9.1 CRITICAL Cisco Identity Services Engine Insufficient Authorization Bypass Vulnerability
CVE-2025-20175 7.7 HIGH Cisco IOS和Cisco IOS XE 安全漏洞
CVE-2025-20173 7.7 HIGH Cisco IOS和Cisco IOS XE 安全漏洞
CVE-2025-20176 7.7 HIGH Cisco IOS和Cisco IOS XE 安全漏洞
CVE-2025-20171 7.7 HIGH Cisco多款产品 安全漏洞
CVE-2025-20170 7.7 HIGH Cisco IOS、Cisco IOS XE和Cisco IOS XR 安全漏洞
CVE-2025-20174 7.7 HIGH Cisco IOS和Cisco IOS XE 安全漏洞
CVE-2025-20169 7.7 HIGH Cisco IOS、Cisco IOS XE和Cisco IOS XR 安全漏洞
CVE-2025-20184 6.5 MEDIUM Cisco Secure Email and Web Manager and Secure Web Appliance Command Injection Vulnerabilit
CVE-2025-20179 6.1 MEDIUM Cisco Expressway Series Cross-Site Scripting Vulnerability
CVE-2025-20183 5.8 MEDIUM Cisco Secure Web Appliance Range Request Bypass Vulnerability
CVE-2025-20205 4.8 MEDIUM Cisco Identity Services Engine 跨站脚本漏洞
CVE-2025-20204 4.8 MEDIUM Cisco Identity Services Engine 跨站脚本漏洞
CVE-2025-20180 4.8 MEDIUM Cisco Secure Email and Web Manager and Secure Email Gateway Cross-Site Scripting Vulnerabi
CVE-2025-20207 4.3 MEDIUM Cisco Secure Email Gateway, Cisco Secure Email and Web Appliance and Cisco Secure Web Appl
CVE-2025-20185 3.4 LOW Cisco Secure Email and Web Manager, Secure Email Gateway, and Secure Web Appliance Privile

IV. Related Vulnerabilities

Same product: IOS
Same vendor: Cisco

V. Comments for CVE-2025-20172

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