CVE-2026-81699
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Aug 27, 2026
Vendor
unknown
Description
openssl_encrypt versions before 1.4.9 fail to properly validate key derivation function costs in crafted files, allowing attackers to trigger unbounded memory and CPU exhaustion during pre-authentication processing. Attackers can supply malicious files with excessive KDF parameters to exhaust system resources and crash or wedge the process before password verification occurs.