CVE-2026-20012

score

<0.1

cvss

8.6

epss

0.4%

published

2026-03-25

kev added

—

first seen

2026-10-21

Cisco IOS, IOS XE, Secure Firewall ASA, and Secure FTD Software contain a denial of service vulnerability caused by improper parsing of IKEv2 packets, letting unauthenticated remote attackers trigger memory leaks and cause device reload or instability, exploit requires sending crafted IKEv2 packets.