CVE-2016-1335: Cisco Asr 5000 Series Software

High severity, CVSS 7.5. EPSS: 3.4% chance of exploitation in the next 30 days.

The SSH implementation in Cisco StarOS before 19.3.M0.62771 and 20.x before 20.0.M0.62768 on ASR 5000 devices mishandles a multi-user public-key authentication configuration, which allows remote authenticated users to gain privileges by establishing a connection from an endpoint that was previously used for an administrator's connection, aka Bug ID CSCux22492.

Affected products

• Cisco Asr 5000 Series Software: version 16.5.2 only; version 17.7.0 only; version 18.4.0 only; version 19.0.1 only; version 19.3.0 only; version 20.0.0 only

Published 2016-02-19. Last modified 2026-06-17.