CVE-2013-6701: Cisco Ons 15454 System Software

Medium severity, CVSS 5.0. EPSS: 1.9% chance of exploitation in the next 30 days.

The tNetTaskLimit process on the Transport Node Controller (TNC) on Cisco ONS 15454 devices with software 9.6 and earlier does not properly prioritize health pings, which allows remote attackers to cause a denial of service (watchdog timeout and TNC reset) via a flood of network traffic, aka Bug ID CSCud97155.

Affected products

• Cisco Cisco Ons 15454 System Software: version 9.0 only; version 9.1 only; version 9.2 only; version 9.2.1 only; version 9.2.2 only; version 9.3 only; …
• Cisco Ons 15454
• Cisco Ons 15454 Mspp: any version
• Cisco Ons 15454 Mstp: any version
• Cisco Ons 15454 Multiservice Transport Platform
• Cisco Ons 15454 Sdh Multiservice Provisioning Platform
• Cisco Ons 15454 Sonet Multiservice Provisioning Platform
• Cisco Ons 15454e Optical Transport Platform: any version

Published 2013-12-18. Last modified 2026-06-17.