Vulnerability Monitor

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CVE-2014-3321

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.

Security Impact Summary

CVE-2014-3321 is a security vulnerability that . Impacting 8 products from cisco, from cisco, from cisco and 5 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2014, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2014-07-18T00:55:04.923

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.7 (MEDIUM)

CVSSv2 Vector

AV:A/AC:M/Au:N/C:N/I:N/A:C

Access Vector: ADJACENT_NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

5.5

Impact Score

6.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios_xr	≤ 4.3.4	Yes
Operating System	cisco	ios_xr	4.3.0	Yes
Operating System	cisco	ios_xr	4.3.1	Yes
Operating System	cisco	ios_xr	4.3.2	Yes
Hardware	cisco	asr_9000_rsp440_router	-	Yes
Hardware	cisco	asr_9001	-	Yes
Hardware	cisco	asr_9006	-	Yes
Hardware	cisco	asr_9010	-	Yes
Hardware	cisco	asr_9904	-	Yes
Hardware	cisco	asr_9912	-	Yes
Hardware	cisco	asr_9922	-	Yes

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3321 Vendor Advisory ([email protected])
http://tools.cisco.com/security/center/viewAlert.x?alertId=34936 Vendor Advisory ([email protected])
http://www.securitytracker.com/id/1030597 Third Party Advisory, VDB Entry ([email protected])
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3321 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://tools.cisco.com/security/center/viewAlert.x?alertId=34936 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1030597 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.