Vulnerability Database

314,343

Total vulnerabilities in the database

CVE-2016-6393

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.

  • Published: Oct 5, 2016
  • Updated: Nov 9, 2025
  • CVE: CVE-2016-6393
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: High
  • Score: 7.1
  • AV:N/AC:M/Au:N/C:N/I:N/A:C

CWEs:

Software From Fixed in
cisco / ios_xe 16.2 16.2.x
cisco / ios_xe 2.1.0 3.18.0.x
cisco / ios 15.0 15.6.x
cisco / ios 12.0 12.4.x