VDB-94025 · CVE-2016-6467 · BID 94772

Cisco ASR 5000 20.0.0/21.0.0/21.0.M0.64702 IPv6 Fragmentation resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Cisco ASR 5000 20.0.0/21.0.0/21.0.M0.64702 (Router Operating System). This issue affects an unknown functionality of the component IPv6 Fragmentation Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability.

The bug was discovered 12/07/2016. The weakness was published 12/07/2016 with Cisco as cisco-sa-20161207-asr as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2016-6467 since 07/26/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

The vulnerability is due to lack of proper input validation of the IPv6 fragment lengths. An attacker could exploit this vulnerability by sending a crafted IPv6 fragment chain to the targeted device. An exploit could allow the attacker to cause a denial of service (DoS) condition if the NPU process unexpectedly reloads. The DoS condition could temporarily impact user traffic.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Similar entry is available at VDB-94023.








  • end of life (old version)

CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍


Class: Resource management
CWE: CWE-399 / CWE-404

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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07/26/2016 🔍
12/07/2016 +134 days 🔍
12/07/2016 +0 days 🔍
12/07/2016 +0 days 🔍
12/07/2016 +0 days 🔍
12/09/2016 +2 days 🔍
12/10/2016 +1 days 🔍
12/13/2016 +3 days 🔍
10/05/2022 +2122 days 🔍


Vendor: cisco.com

Advisory: cisco-sa-20161207-asr
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6467 (🔍)
SecurityTracker: 1037416
SecurityFocus: 94772 - Cisco ASR 5000 Series Aggregation Services Routers CVE-2016-6467 Denial of Service Vulnerability

See also: 🔍


Created: 12/10/2016 06:29 PM
Updated: 10/05/2022 01:42 PM
Changes: 12/10/2016 06:29 PM (59), 06/23/2019 09:35 AM (13), 10/05/2022 01:42 PM (3)
Complete: 🔍
Cache ID: 3:01A:40


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