High severity7.5NVD Advisory· Published Oct 5, 2016· Updated Jun 17, 2026
CVE-2016-6393
CVE-2016-6393
Description
The AAA service in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 2.1 through 3.18 and 16.2 allows remote attackers to cause a denial of service (device reload) via a failed SSH connection attempt that is mishandled during generation of an error-log message, aka Bug ID CSCuy87667.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
512.0 - 12.4, 15.0 - 15.6+ 1 more
- (no CPE)range: 12.0 - 12.4, 15.0 - 15.6
- cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*range: >=12.0,<=12.4
2.1 - 3.18, 16.2+ 2 more
- (no CPE)range: 2.1 - 3.18, 16.2
- cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*range: >=2.1.0,<=3.18.0
- cpe:2.3:o:cisco:ios_xe:16.2:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
4- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-aaadosnvdVendor Advisory
- www.securityfocus.com/bid/93196nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1036914nvdThird Party AdvisoryVDB Entry
- ics-cert.us-cert.gov/advisories/ICSA-16-287-04nvdThird Party AdvisoryUS Government Resource
News mentions
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