CRITICALCVSS v3.1 9.8Actively exploited · CISA KEV since 2022-03-03Vulnerability

CVE-2017-12240

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.

Properties

Euvd product
Cisco IOS and IOS XE
Vulnerability name
Cisco IOS and IOS XE Software DHCP Remote Code Execution Vulnerability
First seen
2026-01-12T21:47:19+00:00
Cvss score
9.8
Epss score
0.13773
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-03-24
Euvd assigner
cisco
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2022-03-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2022-03-03
Score
9.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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INVOLVES (1)

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CVE-2017-12240 (CVSS v3.1 9.8) — Ninja Signal Threat Intelligence | Ninja Signal