CVE-2017-6663
Medium 6.5 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Cisco IOS Software and Cisco IOS XE Software Denial-of-Service Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
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 (MEDIUM)
Score source: NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 2% (percentile: 82) as of 1 November 2026
Affected products
cisco: ios; cisco: ios xe
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-… Vendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-… Vendor Advisory
- http://www.securityfocus.com/bid/99973 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038999 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/99973 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038999 Broken LinkThird Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017… US Government Resource