Vulnerability in Cisco iOS Xe
CVE-2018-0257
A vulnerability in Cisco IOS XE Software running on Cisco cBR Series Converged Broadband Routers could allow an unauthenticated, adjacent attacker to cause high CPU usage on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the incorrect handling of certain DHCP packets. An attacker could exploit this vulnerability by sending certain DHCP packets to a specific segment of an affected device. A successful exploit could allow the attacker to increase CPU usage on the affected device and cause a DoS condition. Cisco Bug IDs: CSCvg73687.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.008 (54.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.1% 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 — versions 16.4, 15.6\(2\)sp, 16.5
- Cisco Cbr Series Converged Broadband Routers — versions Cisco cBR Series Converged Broadband Routers
Weakness classification (CWE)
References
- www.securitytracker.com/id/1040716 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/103948 (VDB Entry, Third Party Advisory, vdb-entry)
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418… (Vendor Advisory)
Frequently asked questions
- What is CVE-2018-0257?
- CVE-2018-0257 is a medium-severity vulnerability in Cisco iOS Xe, classified under CWE-399. CVSS score: 4.3/10. Published 2018-04-19.
- How severe is CVE-2018-0257?
- Medium severity. CVSS v3 base score is 4.3 out of 10.