Vulnerability in Cisco iOS Xe Catalyst Sd-Wan
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Cisco iOS Xe Catalyst Sd-Wan — versions 16.10.6, 16.12.3, 16.12.1
- Cisco iOS Xe Sd-Wan — versions 16.9.1, 16.9.2, 16.9.3
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-20151?
- CVE-2025-20151 is a medium-severity vulnerability in Cisco iOS Xe Catalyst Sd-Wan, classified under CWE-16. CVSS score: 4.3/10. Published 2025-05-07.
- How severe is CVE-2025-20151?
- Medium severity. CVSS v3 base score is 4.3 out of 10.