CVE-2025-20151 Cisco IOS and IOS XE Software SNMPv3 Configuration Restriction Vulnerability
Authenticated attackers can bypass SNMP access restrictions to poll devices from unauthorized sources, potentially reading configuration data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-20151?
CVE-2025-20151 is a medium-severity vulnerability in Cisco IOS XE Catalyst SD-WAN, published on 7 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-20151?
It affects 1 product.
Products include Cisco Ios Xe Sd-Wan.
How do I fix CVE-2025-20151?
No fix has been published for CVE-2025-20151 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-20151 being exploited?
There is no known exploitation of CVE-2025-20151 in the wild and no public exploit code.
Other vulnerabilities in Cisco IOS XE Catalyst SD-WAN
- CVE-2021-34727 Cisco IOS XE SD-WAN Software Buffer Overflow Vulnerability
- CVE-2020-3375 Cisco SD-WAN Solution Software Buffer Overflow Vulnerability
- CVE-2021-1305 Cisco SD-WAN vManage Authorization Bypass Vulnerabilities
- CVE-2023-20035 Cisco IOS XE SD-WAN Software Command Injection Vulnerability
- CVE-2020-3216 Cisco IOS XE SD-WAN Software Authentication Bypass Vulnerability
Sources
Also known as GHSA-v3x4-26xj-qrvg.