CVE-2017-12234

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Summary

CVECVE-2017-12234
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-09-29 01:34:48 UTC
Updated2026-04-21 18:08:25 UTC
DescriptionMultiple vulnerabilities in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerabilities are due to the improper parsing of crafted CIP packets destined to an affected device. An attacker could exploit these vulnerabilities by sending crafted CIP packets to be processed by an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvc43709.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.065450000 probability, percentile 0.911600000 (date 2026-04-21)

CISA KEV: Listed on 2022-03-03; due 2022-03-24; ransomware use Unknown

Problem Types: CWE-20 | NVD-CWE-noinfo | CWE-20 CWE-20

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

CISA Known Exploited Vulnerability

VendorCisco
ProductIOS software
NameCisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://nvd.nist.gov/vuln/detail/CVE-2017-12234

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco 1000 Integrated Services Router - All All All
Hardware Cisco 1100-4gltegb Integrated Services Router - All All All
Hardware Cisco 1100-4gltena Integrated Services Router - All All All
Hardware Cisco 1100-4g/6g Integrated Services Router - All All All
Hardware Cisco 1100-4g Integrated Services Router - All All All
Hardware Cisco 1100-4p - All All All
Hardware Cisco 1100-4p Integrated Services Router - All All All
Hardware Cisco 1100-6g Integrated Services Router - All All All
Hardware Cisco 1100-8p - All All All
Hardware Cisco 1100-8p Integrated Services Router - All All All
Hardware Cisco 1100-lte Integrated Services Router - All All All
Hardware Cisco 1100 Integrated Services Router - All All All
Hardware Cisco 1100 Terminal Services Gateways - All All All
Hardware Cisco 1101-4p - All All All
Hardware Cisco 1101-4p Integrated Services Router - All All All
Hardware Cisco 1101 Integrated Services Router - All All All
Hardware Cisco 1109-2p - All All All
Hardware Cisco 1109-4p - All All All
Hardware Cisco 1111-4pwe - All All All
Hardware Cisco 1111-8pwb - All All All
Hardware Cisco 1111x-8p - All All All
Hardware Cisco 1113-8plteeawe - All All All
Hardware Cisco 1113-8pmwe - All All All
Hardware Cisco 1113-8pwe - All All All
Hardware Cisco 1116-4plteeawe - All All All
Hardware Cisco 1116-4pwe - All All All
Hardware Cisco 1117-4plteeawe - All All All
Hardware Cisco 1117-4pmlteeawe - All All All
Hardware Cisco 1117-4pmwe - All All All
Hardware Cisco 1117-4pwe - All All All
Hardware Cisco 1120 - All All All
Hardware Cisco 1120 Connected Grid Router - All All All
Hardware Cisco 1120 Integrated Services Router - All All All
Hardware Cisco 1131 Integrated Services Router - All All All
Hardware Cisco 1160 Integrated Services Router - All All All
Hardware Cisco 1801 Integrated Service Router - All All All
Hardware Cisco 1802 Integrated Service Router - All All All
Hardware Cisco 1803 Integrated Service Router - All All All
Hardware Cisco 1811 Integrated Service Router - All All All
Hardware Cisco 1812 Integrated Service Router - All All All
Hardware Cisco 1841 Integrated Service Router - All All All
Hardware Cisco 1861 Integrated Service Router - All All All
Hardware Cisco 1905 Integrated Services Router - All All All
Hardware Cisco 1906c Integrated Services Router - All All All
Hardware Cisco 1921 Integrated Services Router - All All All
Hardware Cisco 1941w Integrated Services Router - All All All
Hardware Cisco 1941 Integrated Services Router - All All All
Hardware Cisco Catalyst Ie3200 Rugged Switch - All All All
Hardware Cisco Catalyst Ie3300 Rugged Switch - All All All
Hardware Cisco Catalyst Ie3400 Heavy Duty Switch - All All All
Hardware Cisco Catalyst Ie3400 Rugged Switch - All All All
Hardware Cisco Catalyst Ie9300 - All All All
Hardware Cisco Esr-6300-con-k9 - All All All
Hardware Cisco Esr-6300-ncp-k9 - All All All
Operating System Cisco Ios All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Cisco IOS affected Cisco IOS Not specified

References

ReferenceSourceLinkTags
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
Malformed Request af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Broken Link, Third Party Advisory, VDB Entry
Cisco IOS Common Industrial Protocol Implementation Bugs Let Remote Users Cause the Target System to Reload - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Broken Link, Third Party Advisory, VDB Entry
Cisco IOS Software Common Industrial Protocol Request Denial of Service Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev
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