Cisco IOS XR 4.3.1.BASE on ASR 9000 NetFlow Processor input validation

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 problematic, was found in Cisco IOS XR 4.3.1.BASE on ASR 9000 (Router Operating System). Affected is an unknown functionality of the component NetFlow Processor. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The advisory summarizes:

Only Typhoon Line cards are affected by this vulnerability

The weakness was shared 08/25/2014 with Cisco as CSCup77750 as confirmed security notice (Website). The advisory is shared for download at This vulnerability is traded as CVE-2014-3335 since 05/07/2014. The exploitability is told to be difficult. The attack can only be done within the local network. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 77729 , which helps to determine the existence of the flaw in a target environment. It is .

Upgrading to version,, or eliminates this vulnerability. The upgrade is hosted for download at A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (95443) and Tenable (77729). Further details are available at







  • commercial


  • end of life (version)

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
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Class: Input validation
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

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Current Price Estimation: 🔍


Nessus ID: 77729
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: IOS XR


05/07/2014 🔍
08/25/2014 +110 days 🔍
08/25/2014 +0 days 🔍
08/25/2014 +0 days 🔍
08/25/2014 +0 days 🔍
08/26/2014 +1 days 🔍
08/26/2014 +0 days 🔍
08/26/2014 +0 days 🔍
08/28/2014 +2 days 🔍
09/17/2014 +20 days 🔍
09/22/2014 +5 days 🔍
02/11/2022 +2699 days 🔍



Advisory: CSCup77750
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3335 (🔍)
X-Force: 95443 - Cisco IOS XR NetFlow denial of service, Medium Risk
SecurityTracker: 1030757 - Cisco ASR 9000 Series IOS XR Router Packet Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 46227 - Cisco IOS XR Remote Denial of Service via a Crafted Packet, High
SecurityFocus: 69383 - Cisco IOS XR Software Packet Parsing CVE-2014-3335 Denial of Service Vulnerability
Secunia: 60222 - Cisco IOS XR Software NetFlow Multicast MAC Address Processing Denial of Service Vulnerabi, Less Critical

scip Labs:
Misc.: 🔍


Created: 08/26/2014 12:31 PM
Updated: 02/11/2022 03:21 AM
Changes: 08/26/2014 12:31 PM (81), 06/06/2017 08:44 AM (3), 02/11/2022 03:13 AM (3), 02/11/2022 03:21 AM (1)
Complete: 🔍


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