Strix
26.1K

CVE-2025-20151

MEDIUMCVSS 4.3/10EPSS 0.33%

Last modified

CVE-2025-20151 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability in the implementation of the Simple Network Management Protocol Version 3 (SNMPv3) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to poll an affected device using SNMP, even if the device is configured to deny SNMP traffic from an unauthorized source or the SNMPv3 username is removed from the configuration. This vulnerability exists because of the way that the SNMPv3 configuration is stored in the Cisco IOS Software and Cisco IOS XE Software startup configuration. An attacker could exploit this vulnerability by polling an affected device from a source address that should have been denied. EPSS estimates a 0.33% chance of exploitation in the next 30 days.

Description

A vulnerability in the implementation of the Simple Network Management Protocol Version 3 (SNMPv3) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to poll an affected device using SNMP, even if the device is configured to deny SNMP traffic from an unauthorized source or the SNMPv3 username is removed from the configuration. This vulnerability exists because of the way that the SNMPv3 configuration is stored in the Cisco IOS Software and Cisco IOS XE Software startup configuration. An attacker could exploit this vulnerability by polling an affected device from a source address that should have been denied. A successful exploit could allow the attacker to perform SNMP operations from a source that should be denied. Note: The attacker has no control of the SNMPv3 configuration. To exploit this vulnerability, the attacker must have valid SNMPv3 user credentials. For more information, see the section of this advisory.

Metrics

CVSS 3.1
4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability
0.33%

24.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe Sd-Wan16.9.1
CiscoIos Xe Sd-Wan16.9.2
CiscoIos Xe Sd-Wan16.9.3
CiscoIos Xe Sd-Wan16.9.4
CiscoIos Xe Sd-Wan16.10.1
CiscoIos Xe Sd-Wan16.10.2
CiscoIos Xe Sd-Wan16.10.3
CiscoIos Xe Sd-Wan16.10.3a
CiscoIos Xe Sd-Wan16.10.3b
CiscoIos Xe Sd-Wan16.10.4
CiscoIos Xe Sd-Wan16.10.5
CiscoIos Xe Sd-Wan16.10.6
CiscoIos Xe Sd-Wan16.11.1
CiscoIos Xe Sd-Wan16.11.1a
CiscoIos Xe Sd-Wan16.11.1b
CiscoIos Xe Sd-Wan16.11.1d
CiscoIos Xe Sd-Wan16.11.1f
CiscoIos Xe Sd-Wan16.11.1s
CiscoIos Xe Sd-Wan16.12.1
CiscoIos Xe Sd-Wan16.12.1a
CiscoIos Xe Sd-Wan16.12.1b
CiscoIos Xe Sd-Wan16.12.1b1
CiscoIos Xe Sd-Wan16.12.1c
CiscoIos Xe Sd-Wan16.12.1d
CiscoIos Xe Sd-Wan16.12.1e
CiscoIos Xe Sd-Wan16.12.2r
CiscoIos Xe Sd-Wan16.12.3
CiscoIos Xe Sd-Wan16.12.4
CiscoIos Xe Sd-Wan16.12.4a
CiscoIos Xe Sd-Wan16.12.5

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-20151?
A vulnerability in the implementation of the Simple Network Management Protocol Version 3 (SNMPv3) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to poll an affected device using SNMP, even if the device is configured to deny SNMP traffic from an unauthorized source or the SNMPv3 username is removed from the configuration. This vulnerability exists because of the way that the SNMPv3 configuration is stored in the Cisco IOS Software and Cisco IOS XE Software startup configuration. An attacker could exploit this vulnerability by polling an affected device from a source address that should have been denied. A successful exploit could allow the attacker to perform SNMP operations from a source that should be denied. Note: The attacker has no control of the SNMPv3 configuration. To exploit this vulnerability, the attacker must have valid SNMPv3 user credentials. For more information, see the section of this advisory.
How severe is CVE-2025-20151?
CVE-2025-20151 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.
How do I fix CVE-2025-20151?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-20151?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST