EN

CVE-2025-20169

High
7.7
0.05.010.0
Year
2025
Published
Feb 5, 2025
Known Affected Devices
0
CVSS Score
7.7

What is CVE-2025-20169?

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.

CVSS Vector Breakdown

CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
AV
Attack Vector
Network

Exploitable remotely over the network without requiring access to the local system.

AC
Attack Complexity
Low

No special conditions required. Exploit can be performed reliably and repeatedly.

PR
Privileges Required
Low

Basic user account required (e.g. standard login without admin rights).

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Changed

Exploiting the vulnerability can affect other components beyond the vulnerable one.

C
Confidentiality Impact
None

No confidentiality impact. Sensitive data is not exposed.

I
Integrity Impact
None

No integrity impact. Data cannot be modified.

A
Availability Impact
High

Complete denial of service. The component becomes fully unavailable.

Known Affected Devices

Cisco Cisco ISR 927 Cisco Cisco ASR 1001-X Cisco Cisco Catalyst 2960X-48FPS-L Cisco Cisco Catalyst 2960XR-24TS-I Cisco Cisco Catalyst 2960XR-48TS-I Cisco Cisco Catalyst 3650-24PS-L Cisco Cisco Catalyst 3650-48FPS-L Cisco Cisco Catalyst 9200-24P Cisco Cisco Catalyst 9200-24T Cisco Cisco Catalyst 9200L-24P-4X Cisco Cisco Catalyst 9200L-48P-4X Cisco Cisco Catalyst 9300-24P Cisco Cisco Catalyst 9300-24T Cisco Cisco Catalyst 9300-48T Cisco Cisco Catalyst 9300-48U Cisco Cisco Catalyst 9500-12Q Cisco Cisco Catalyst 9500-32C Cisco Cisco Nexus 7010 Cisco Cisco Nexus 9508

FAQ

How severe is CVE-2025-20169?

CVE-2025-20169 has a CVSS score of 7.7/10, rated as High. This is a high severity vulnerability and should be patched as soon as possible.

What does the CVSS score mean for CVE-2025-20169?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2025-20169 scores 7.7/10 (High). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2025-20169?

The list of devices confirmed to be affected by CVE-2025-20169 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2025-20169?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.