high
7.7
CWE
805
Advisory Published
Updated

CVE-2025-20169

First published: Wed Feb 05 2025(Updated: )

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.

Credit: psirt@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS
Cisco IOS and IOS XE Software

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Reference Links

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2025-20169?

    CVE-2025-20169 has been classified as a moderate severity vulnerability that can lead to a denial-of-service condition.

  • How do I fix CVE-2025-20169?

    To fix CVE-2025-20169, you should apply the latest patches and updates released by Cisco for affected versions of IOS and IOS XE Software.

  • Who is affected by CVE-2025-20169?

    CVE-2025-20169 affects devices running Cisco IOS Software and Cisco IOS XE Software that utilize SNMP.

  • What type of attack does CVE-2025-20169 facilitate?

    CVE-2025-20169 allows an authenticated remote attacker to cause a denial-of-service condition on the affected devices.

  • What causes the vulnerability CVE-2025-20169?

    The vulnerability CVE-2025-20169 is caused by improper error handling when parsing SNMP requests in the affected Cisco software.

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