CVE-2021-40118

score

<0.1

cvss

8.6

epss

1.4%

published

2021-10-27

kev added

—

first seen

2026-10-21

Cisco ASA and FTD Software contain a denial of service caused by improper input validation when parsing HTTPS requests, letting unauthenticated remote attackers cause device reload, exploit requires sending malicious HTTPS requests.