VULNERABILITY INTELLIGENCE

CVE-2026-81686

CVSS score6.2 MEDIUM
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-09-02
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

openssl_encrypt 1.4.x before 1.4.9 contains an optional D-Bus crypto service whose org.freedesktop.DBus.Properties.Set method performs neither a polkit authorization check nor value validation. Any local user on the system bus can call Set without authorization and set MaxConcurrentOperations (to 0/negative, causing the concurrency gate to refuse all subsequent operations, or to a huge value removing the limit) or the unbounded DefaultTimeout, resulting in a persistent denial of service of the root daemon. The D-Bus service exists only on the 1.4.x line and was removed in 1.5.x.

Weakness classification

  • disclosure@vulncheck.com: CWE-20

Primary references