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CVE-2025-20170

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）公司的产品。Cisco IOS是一套为其网络设备开发的操作系统。Cisco IOS XR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。 Cisco IOS、Cisco IOS XE和Cisco IOS XR存在安全漏洞，该漏洞源于SNMP请求解析错误处理不当，会导致拒绝服务或SNMP进程重启。

CVSS 7.7 · High EPSS 0.78% · P54

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-20170

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 and Cisco IOS XE 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. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition.  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）公司的产品。Cisco IOS是一套为其网络设备开发的操作系统。Cisco IOS XR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。 Cisco IOS、Cisco IOS XE和Cisco IOS XR存在安全漏洞，该漏洞源于SNMP请求解析错误处理不当，会导致拒绝服务或SNMP进程重启。
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(4)B -
Cisco Cisco IOS XE Software 3.2.0SG -

II. Public POCs for CVE-2025-20170

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III. Intelligence Information for CVE-2025-20170

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Vendor Advisories for CVE-2025-20170 (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-2025-20172 7.7 HIGH Cisco IOS、Cisco IOS XE和Cisco IOS XR 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-2025-20174 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-2025-20170

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