VULNERABILITY INTELLIGENCE

CVE-2009-3987

CVSS score7.8 HIGH
EPSS probability1.62%
CISA KEVNot currently listed
Published2009-12-17
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:C/I:N/A:N

Description

The GeckoActiveXObject function in Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, and SeaMonkey before 2.0.1, generates different exception messages depending on whether the referenced COM object is listed in the registry, which allows remote attackers to obtain potentially sensitive information about installed software by making multiple calls that specify the ProgID values of different COM objects.

Weakness classification

  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Primary references