known ransomware use

Ivanti Pulse Connect Secure Use-After-Free Vulnerability

Added to KEV
2021-11-03
Federal due date
2022-05-03
Vendor
Ivanti
Product
Pulse Connect Secure
EPSS
99.8th percentile (score 0.936, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2021-22893

CISA short description

Ivanti Pulse Connect Secure contains a use-after-free vulnerability that allow a remote, unauthenticated attacker to execute code via license services.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.