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CRITICAL SEVERITY
CVE-2017-12240 Cisco · IOS and IOS XE Software

Cisco IOS and IOS XE Software DHCP Remote Code Execution Vulnerability

Technical Severity

CVSS v3.1 Metrics

CRITICAL
9.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

7.92 %
Predictive Probability
Percentile Rank
91.8 th

Documented as more likely to be exploited than 91.8% of known CVEs.

Detection Date

Mar 03, 2022

Remediation Due

Mar 24, 2022

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence