What is CVE-2016-6393?

CVE-2016-6393 is a high-severity vulnerability in Cisco iOS, classified under CWE-399. CVSS score: 7.5/10. Published 2016-10-05.

How severe is CVE-2016-6393?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Cisco iOS

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.

EPSS: 0.046 (90.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cisco Ios
Cisco Ios_xe — versions 16.2
N/a — versions n/a

Weakness classification (CWE)

CWE-399

References

psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
psirt@cisco.com (US Government Resource, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2016-6393?: CVE-2016-6393 is a high-severity vulnerability in Cisco iOS, classified under CWE-399. CVSS score: 7.5/10. Published 2016-10-05.
How severe is CVE-2016-6393?: High severity. CVSS v3 base score is 7.5 out of 10.