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CVE-2017-12240

KEV
Updated Jan 12, 2026 · PUBLISHED
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Description

The Dynamic Host Configuration Protocol (DHCP) relay subsystem of Cisco IOS and Cisco IOS XE Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system.

Full record on cve.org →

Affected packages

PackageVendor / ProductVersion rangeStatus
Cisco IOS and IOS XEn/a / Cisco IOS and IOS XECisco IOS and IOS XEaffected