Is CVE-2014-3321 being actively exploited?

CVE-2014-3321 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2014-3321?

CVE-2014-3321 has a CVSS 2.0 base score of 5.7 (MEDIUM).

CVE-2014-3321

MEDIUM · CVSS 5.7EPSS 0.6%EU EUVD

Cisco IOS XR 4.3.4 and earlier on ASR 9000 devices, when bridge-group virtual interface (BVI) routing is enabled, allows remote attackers to cause a denial of service (chip and card hangs) via a series of crafted MPLS packets, aka Bug ID CSCuo91149.

Key facts

CVSS score: 5.7 (v2.0)
Severity: MEDIUM
CVSS vector: AV:A/AC:M/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-20
EPSS score: 0.6% (51th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2014-3334)
Published: July 18, 2014
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2014-3334 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

cisco / asr 9000 rsp440 router
cisco / asr 9001
cisco / asr 9006
cisco / asr 9010
cisco / asr 9904
cisco / asr 9912
cisco / asr 9922
cisco / ios xr
cisco / ios xr
cisco / ios xr
cisco / ios xr

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3321(Vendor Advisory)
http://tools.cisco.com/security/center/viewAlert.x?alertId=34936(Vendor Advisory)
http://www.securitytracker.com/id/1030597(Third Party Advisory, VDB Entry)

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