OpenSSL Information Disclosure Vulnerability

Added to KEV
2022-05-04
Federal due date
2022-05-25
Vendor
OpenSSL
Product
OpenSSL
EPSS
100.0th percentile (score 0.945, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2014-0160

CISA short description

The TLS and DTLS implementations in OpenSSL do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information.

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.