CVE-2013-3436: Cisco IOS

Medium severity, CVSS 5.0. EPSS: 1.4% chance of exploitation in the next 30 days.

The default configuration of the Group Encrypted Transport VPN (GET VPN) feature on Cisco IOS uses an improper mechanism for enabling Group Domain of Interpretation (GDOI) traffic flow, which allows remote attackers to bypass the encryption policy via certain uses of UDP port 848, aka Bug ID CSCui07698.

Affected products

• Cisco IOS: affected versions not specified

Published 2013-07-19. Last modified 2026-06-16.