VULNERABILITY INTELLIGENCE
CVE-2026-81687
CVSS score5.5 MEDIUM
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-09-23
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Description
openssl_encrypt versions before 1.4.9 fail to enforce a time ceiling on key derivation function iteration counts specified in file metadata. Attackers can craft files with extremely high KDF iteration counts to consume CPU resources for unbounded periods before password verification occurs.
Weakness classification
- disclosure@vulncheck.com: CWE-400