CVE-2017-6663

Name: CVE-2017-6663
Creator: NVD / NIST
Published: 2017-08-07T06:29:00.23+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10Actively ExploitedEPSS 2.14%

Last modified Jun 17, 2026

CVE-2017-6663 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in the Autonomic Networking feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause autonomic nodes of an affected system to reload, resulting in a denial of service (DoS) condition. More Information: CSCvd88936. CISA has confirmed active exploitation in the wild. EPSS estimates a 2.14% chance of exploitation in the next 30 days.

Description

A vulnerability in the Autonomic Networking feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause autonomic nodes of an affected system to reload, resulting in a denial of service (DoS) condition. More Information: CSCvd88936. Known Affected Releases: Denali-16.2.1 Denali-16.3.1.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

2.14%

79.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Mar 24, 2022.

Affected Software

Vendor	Product	Versions
Cisco	Ios	15.2\(3\)e
Cisco	Ios	15.2\(3\)e1
Cisco	Ios	15.2\(3\)e2
Cisco	Ios	15.2\(3\)e3
Cisco	Ios	15.2\(3\)e4
Cisco	Ios	15.2\(3\)e5
Cisco	Ios	15.2\(3a\)e
Cisco	Ios	15.2\(3a\)e1
Cisco	Ios	15.2\(3m\)e2
Cisco	Ios	15.2\(3m\)e3
Cisco	Ios	15.2\(3m\)e6
Cisco	Ios	15.2\(3m\)e8
Cisco	Ios	15.2\(4\)e
Cisco	Ios	15.2\(4\)e1
Cisco	Ios	15.2\(4\)e2
Cisco	Ios	15.2\(4\)e3
Cisco	Ios	15.2\(5\)e
Cisco	Ios	15.2\(5\)e1
Cisco	Ios	15.2\(5a\)e
Cisco	Ios	15.2\(5b\)e
Cisco	Ios	15.3\(3\)s
Cisco	Ios	15.3\(3\)s1
Cisco	Ios	15.3\(3\)s1a
Cisco	Ios	15.3\(3\)s2
Cisco	Ios	15.3\(3\)s3
Cisco	Ios	15.3\(3\)s4
Cisco	Ios	15.3\(3\)s5
Cisco	Ios	15.3\(3\)s6
Cisco	Ios	15.3\(3\)s7
Cisco	Ios	15.3\(3\)s8
Cisco	Ios	15.3\(3\)s8a
Cisco	Ios	15.3\(3\)s9
Cisco	Ios	15.3\(3\)s10
Cisco	Ios	15.4\(1\)s
Cisco	Ios	15.4\(1\)s1
Cisco	Ios	15.4\(1\)s2
Cisco	Ios	15.4\(1\)s3
Cisco	Ios	15.4\(1\)s4
Cisco	Ios	15.4\(2\)s
Cisco	Ios	15.4\(2\)s1
Cisco	Ios	15.4\(2\)s2
Cisco	Ios	15.4\(2\)s3
Cisco	Ios	15.4\(2\)s4
Cisco	Ios	15.4\(3\)s
Cisco	Ios	15.4\(3\)s1
Cisco	Ios	15.4\(3\)s2
Cisco	Ios	15.4\(3\)s3
Cisco	Ios	15.4\(3\)s4
Cisco	Ios	15.4\(3\)s5
Cisco	Ios	15.4\(3\)s5a

Showing 50 of 186 affected configurations. See NVD for the full list.

References

http://www.securityfocus.com/bid/99973Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038999Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidosVendor Advisory
http://www.securityfocus.com/bid/99973Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038999Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidosVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6663US Government Resource

Timeline

Published: Aug 7, 2017
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2017-6663?

How severe is CVE-2017-6663?

CVE-2017-6663 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.14% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2017-6663?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-6663?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST