Is CVE-2014-2146 being actively exploited?

CVE-2014-2146 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2014-2146?

CVE-2014-2146 has a CVSS 3.0 base score of 6.5 (MEDIUM).

CVE-2014-2146

MEDIUM · CVSS 6.5EPSS 1.3%EU EUVD

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.

Key facts

CVSS score: 6.5 (v3.0)
Severity: MEDIUM
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-20
EPSS score: 1.3% (69th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2014-2186)
Published: September 22, 2016
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-2186 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

cisco / ios
cisco / ios xe

Certified products that may be affected

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

Cisco Catalyst 4500 Series Wired Access Switches running IOS-XE 3.10 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-10906-2018 - archived
Cisco Catalyst 3K/4K Wired Access Switches running IOS-XE 3.8.0E - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10688-2016 - archived
Cisco Aggregation Services Router (ASR) 1000 Series, IOS XE 3.13 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10609-2015 - archived
Cisco Integrated Services Router 4400 Series (ISR-4400), IOS XE 3.13.0 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10600-2015 - archived
Cisco Catalyst 3650, 3850, 4500E (Sup7E, Sup7LE, Sup8E), 4500X, 4500XF running IOS-XE 3.6.1S - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10607-2014 - archived

See all 10 in the Security Certifications Explorer.

References

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

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain