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CVE-2017-12234

7.5
HIGHCVSS v3.1 Base Score
11.28%
LOW RiskEPSS (94th percentile)
KEV

Multiple 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.

Published: 9/29/2017
Modified: 4/21/2026
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability

Vendor / Product:

Cisco IOS software

Required Action:

Apply updates per vendor instructions.

Due Date: 3/24/2022(OVERDUE)
Added to KEV:

3/3/2022

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2017-12234

Vulnerability Summary

CVSS v3 Score

7.5HIGH

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

CVSS v2 Score

7.8

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

EPSS Score (Exploitation Probability)

11.28%LOW Exploitation Risk
94th percentile

This vulnerability has a 11.28% probability of being exploited in the next 30 days, ranking higher than 94% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-20)

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Similar SeverityHIGH