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CVE-2017-6663: Cisco IOS Software and Cisco IOS XE Software Denial-of-Service Vulnerability

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-03-03
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-08-07 · updated 2026-06-17

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.

Affected products

• Cisco IOS: 15.2(3)e, 15.2(3)e1, 15.2(3)e2, 15.2(3)e3, 15.2(3)e4, 15.2(3)e5 (+111)
• Cisco IOS XE: 3.7.0e, 3.7.1e, 3.7.3e, 3.8.0e, 3.8.0ex, 3.8.1e (+63)

References

• http://www.securityfocus.com/bid/99973
• http://www.securitytracker.com/id/1038999
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidos
• http://www.securityfocus.com/bid/99973
• http://www.securitytracker.com/id/1038999
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidos
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6663

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