CVE-2014-2146

Name: CVE-2014-2146
Creator: NVD / NIST
Published: 2016-09-22T17:59:00.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.26%

Last modified Jun 17, 2026

CVE-2014-2146 is a vulnerability of currently unknown severity. The Zone-Based Firewall (ZBFW) functionality in Cisco IOS, possibly 15.4 and earlier, and IOS XE, possibly 3.13 and earlier, mishandles zone checking for existing sessions, which allows remote attackers to bypass intended resource-access restrictions via spoofed traffic that matches one of these sessions, aka Bug IDs CSCun94946 and CSCun96847.. EPSS estimates a 1.26% chance of exploitation in the next 30 days.

Description

The Zone-Based Firewall (ZBFW) functionality in Cisco IOS, possibly 15.4 and earlier, and IOS XE, possibly 3.13 and earlier, mishandles zone checking for existing sessions, which allows remote attackers to bypass intended resource-access restrictions via spoofed traffic that matches one of these sessions, aka Bug IDs CSCun94946 and CSCun96847.

Metrics

EPSS Probability

1.26%

65.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Ios	<= 15.4\(1\)t1
Cisco	Ios Xe	<= 15.4\(3\)s

References

Timeline

Published: Sep 22, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2014-2146?

How severe is CVE-2014-2146?

Severity scoring for CVE-2014-2146 is pending analysis. The EPSS model estimates a 1.26% probability of exploitation in the next 30 days.

How do I fix CVE-2014-2146?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2014-2146?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST