VULNERABILITY INTELLIGENCE

CVE-2026-81699

CVSS score7.5 HIGH
EPSS probability0.51%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-09-03
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-770

Primary references