CVE-2009-3987
The GeckoActiveXObject function in Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, and...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-3987- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:C/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-3987- Updated
- 2026-11-02
EUVDEUVD-2009-3958 No score
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.
- Record
EUVD-2009-3958- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vwqf-r5hr-488h No score
The GeckoActiveXObject function in Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, and...
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.
- Record
GHSA-vwqf-r5hr-488h- Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-3987 is a high vulnerability (CVSS 7.8) in Mozilla Firefox, published December 17, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.62%, the 76th percentile. No source names a fixed version.
References
secunia.com/advisories/37699
bugzilla.mozilla.org/show_bug.cgi?id=503451
vupen.com/english/advisories/2009/3547
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7958
bugzilla.redhat.com/show_bug.cgi?id=546729