Is CVE-2016-6432 being actively exploited?

CVE-2016-6432 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2016-6432?

CVE-2016-6432 has a CVSS 3.0 base score of 8.1 (HIGH).

CVE-2016-6432

HIGH · CVSS 8.1EPSS 6.7%EU EUVD

A vulnerability in the Identity Firewall feature of Cisco ASA Software before 9.6(2.1) could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code. The vulnerability is due to a buffer overflow in the affected code area. An attacker could exploit this vulnerability by sending a crafted NetBIOS packet in response to a NetBIOS probe sent by the ASA software. An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or cause a reload of the affected system. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed and transparent firewall mode and in single or multiple context mode. This vulnerability can be triggered by IPv4 traffic.

Key facts

CVSS score: 8.1 (v3.0)
Severity: HIGH
CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-119
EPSS score: 6.7% (94th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2016-7355)
Published: October 27, 2016
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2016-7355 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

cisco / adaptive security appliance software
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and 80 more…

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Cisco Adaptive Security Appliances Version: ASA software version 9.1(2) Components: ASA 5500 (5505, 5510, 5520, 5540, 5550, 5580-20-40), ASA 5500-X Series (5512-X, 5515-X, 5525-X, 5545-X, 5555-X), ASA 5585-X (5585-10, 5585-20, 5585-40, 5585-60), ASA Services Module (ASA-SM) - Cisco Systems, Inc. - Common Criteria Certificate Number: 2013/86 - archived

References

http://www.securityfocus.com/bid/93784(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1037059
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161019-asa-idfw(Mitigation, Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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