A vulnerability in Cisco IOS XE Software running on Cisco cBR Series Converged Broadband Routers could allow an unauthenticated, adjacent…

Description

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.

Scores

EPSS (exploitation in 30 days)

0.77% · top 44% of all CVEs (4 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

• CWE-399 (opens in a new tab)All about CWE-399 and its CVEs

Affected products

• Cisco cBR Series Converged Broadband Routers

  • affected Cisco cBR Series Converged Broadband Routers

References (3)

• 1040716 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 103948 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-cbr8 (opens in a new tab)x_refsource_CONFIRMx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2018-0257](https://trackcve.app/badge/CVE-2018-0257.svg)](https://trackcve.app/cve/CVE-2018-0257)

Record last updated 29 Nov 2024, 15:15 UTC.