CVE-2017-6729

What it is

A vulnerability in the Border Gateway Protocol (BGP) processing functionality of the Cisco StarOS operating system for Cisco ASR 5000 Series Routers and Cisco Virtualized Packet Core (VPC) Software could allow an unauthenticated, remote attacker to cause the BGP process on an affected system to reload, resulting in a denial of service (DoS) condition. This vulnerability affects the following products if they are running the Cisco StarOS operating system and BGP is enabled for the system: Cisco ASR 5000 Series Routers and Cisco Virtualized Packet Core Software. More Information: CSCvc44968. Known Affected Releases: 16.4.1 19.1.0 21.1.0 21.1.M0.65824. Known Fixed Releases: 21.3.A0.65902 21.2.A0.65905 21.1.b0.66164 21.1.V0.66014 21.1.R0.65898 21.1.M0.65894 21.1.0.66030 21.1.0.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

2.3% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2017-07-10 20:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 01:22 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.3% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2017-07-10 20:29 UTC

Last modified

2026-06-17 01:22 UTC

Exploit probability

2.3% · EPSS, next 30 days

Record status

Modified

Affected

• Cisco Asr 5000 Software 16.4.1
• Cisco Asr 5000 Software 16.5.0
• Cisco Asr 5000 Software 16.5.2
• Cisco Asr 5000 Software 17.2.0
• Cisco Asr 5000 Software 17.2.0.59184
• Cisco Asr 5000 Software 17.3.0
• Cisco Asr 5000 Software 17.3.1
• Cisco Asr 5000 Software 17.3.9.62033

Attack profile CVSS 3.0 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2017-6729.md and follow it. Check whether this project is affected by CVE-2017-6729. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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