Cisco IOS 2.2(18)EW, 12.2(18)EWA, 12.2(14)SZ, 12.2(18)S, 12.2(18)SE, 12.2(18)SV, 12.2(18)SW, and other versions without the "no service…

Description

Cisco IOS 2.2(18)EW, 12.2(18)EWA, 12.2(14)SZ, 12.2(18)S, 12.2(18)SE, 12.2(18)SV, 12.2(18)SW, and other versions without the "no service dhcp" command, keep undeliverable DHCP packets in the queue instead of dropping them, which allows remote attackers to cause a denial of service (dropped traffic) via multiple undeliverable DHCP packets that exceed the input queue size.

Scores

EPSS (exploitation in 30 days)

2.3% · top 16% of all CVEs (3 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (6)

• oval:org.mitre.oval:def:5632 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• TA04-316A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
• 20041110 Cisco Security Advisory: Cisco IOS DHCP Blocked Interface Denial-of-Service (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• VU#630104 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
• cisco-ios-dhcp-dos(18021) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• P-034 (opens in a new tab)third-party-advisorygovernment-resourcex_refsource_CIACx_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-2004-1111](https://trackcve.app/badge/CVE-2004-1111.svg)](https://trackcve.app/cve/CVE-2004-1111)

Record last updated 8 Aug 2024, 00:39 UTC.