How severe is CVE-2017-6663?

CVE-2017-6663 has a CVSS 3.1 base score of 6.5 (MEDIUM). EPSS estimates a 2.1% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2017-6663: Cisco IOS Software and Cisco IOS XE Software

CISA Known Exploited Vulnerabilities

Cisco IOS Software and Cisco IOS XE Software Denial-of-Service Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-03-03

Remediation due

2022-03-24

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2017-6663

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.

Severity

CVSS 3.1 · CISA6.5 MEDIUM

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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impactpartial

Affected Products

Vendor	Product	Affected versions
-	Cisco IOS and IOS XE	Cisco IOS and IOS XE

References

3 Links

Vulnerability databases

Other references

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidos

Record Details

Published

2017-08-07

Last updated

2025-10-21

Assigner (CNA)

cisco

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.