What is CVE-2016-6424?

CVE-2016-6424 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under CWE-399. CVSS score: 6.5/10. Published 2016-10-06.

How severe is CVE-2016-6424?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Cisco Adaptive Security Appliance Software

CVE-2016-6424

The DHCP Relay implementation in Cisco Adaptive Security Appliance (ASA) Software 8.4.7.29 and 9.1.7.4 allows remote attackers to cause a denial of service (interface wedge) via a crafted rate of DHCP packet transmission, aka Bug ID CSCuy66942.

Published 2016-10-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Cisco Adaptive Security Appliance Software — versions 9.1(7)4, 9.1\(7\)4, 8.4.7.29

Weakness classification (CWE)

CWE-399

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005… (vendor-advisory, Vendor Advisory)
www.securityfocus.com/bid/93408 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1036961 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-6424?: CVE-2016-6424 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under CWE-399. CVSS score: 6.5/10. Published 2016-10-06.
How severe is CVE-2016-6424?: Medium severity. CVSS v3 base score is 6.5 out of 10.