Vulnerability in Cisco iOS Xe Software
CVE-2025-20173
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (53.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Cisco iOS Xe Software — versions 3.2.0SG, 3.2.1SG, 3.2.2SG
- Cisco iOS — versions 15.6\(2\)sp7, 15.2(4)ec2, 15.2(4)jb1
- Cisco iOS Xe — versions 3.2.0se, 3.2.0sg, 3.2.1se
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-20173?
- CVE-2025-20173 is a high-severity vulnerability in Cisco iOS Xe Software, classified under CWE-248. CVSS score: 7.7/10. Published 2025-02-05.
- How severe is CVE-2025-20173?
- High severity. CVSS v3 base score is 7.7 out of 10.
- Is CVE-2025-20173 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.