VULNERABILITY INTELLIGENCE

CVE-2026-84138

CVSS score6.5 MEDIUM
EPSS probability0.37%
CISA KEVNot currently listed
Published2026-09-01
Last modified2026-09-03
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Description

Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.

Weakness classification

  • nvd@nist.gov: CWE-400
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-400

Primary references