VULNERABILITY INTELLIGENCE

CVE-2020-24661

CVSS score5.9 MEDIUM
EPSS probability0.92%
CISA KEVNot currently listed
Published2020-08-26
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

GNOME Geary before 3.36.3 mishandles pinned TLS certificate verification for IMAP and SMTP services using invalid TLS certificates (e.g., self-signed certificates) when the client system is not configured to use a system-provided PKCS#11 store. This allows a meddler in the middle to present a different invalid certificate to intercept incoming and outgoing mail.

Weakness classification

  • CWE-295: Improper Certificate Validation

Primary references