Mozilla GeckoActiveXObject exception messages can be used to enumerate installed COM objects
Published Dec 17, 2009
7.8
HIGHCVSS 2.0
EPSS 1.62%
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.
Affected products
No data.
- ≤ 3.0.15
- 0.1
- 0.2
- 0.3
- 0.4
- 0.5
- 0.6
- 0.6.1
- 0.7
- 0.7.1
- 0.8
- 0.9
- 0.9
- 0.9.1
- 0.9.2
- 0.9.3
- 0.10
- 0.10.1
- 1.0
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.4.1
- 1.5
- 1.5
- 1.5
- 1.5.0.1
- 1.5.0.2
- 1.5.0.3
- 1.5.0.4
- 1.5.0.5
- 1.5.0.6
- 1.5.0.7
- 1.5.0.8
- 1.5.0.9
- 1.5.0.10
- 1.5.0.11
- 1.5.0.12
- 1.5.1
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.5
- 1.5.6
- 1.5.7
- 1.5.8
- 1.8
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0.0.1
- 2.0.0.2
- 2.0.0.3
- 2.0.0.4
- 2.0.0.5
- 2.0.0.6
- 2.0.0.7
- 2.0.0.8
- 2.0.0.9
- 2.0.0.10
- 2.0.0.11
- 2.0.0.12
- 2.0.0.13
- 2.0.0.14
- 2.0.0.15
- 2.0.0.16
- 2.0.0.17
- 2.0.0.18
- 2.0.0.19
- 2.0.0.20
- 2.0.0.21
- 2.0_.1
- 2.0_.4
- 2.0_.5
- 2.0_.6
- 2.0_.7
- 2.0_.9
- 2.0_.10
- 2.0_8
- 3.0
- 3.0
- 3.0
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.0.12
- 3.0.13
- 3.0.14
- 3.5.1
- 3.5.2
- 3.5.3
- 3.5.4
- 3.5.5
- ≤ 2.0
- 1.0
- 1.0
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.0.99
- 1.1
- 1.1
- 1.1
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.5
- 1.1.6
- 1.1.7
- 1.1.8
- 1.1.9
- 1.1.10
- 1.1.11
- 1.1.12
- 1.1.13
- 1.1.14
- 1.1.15
- 1.1.16
- 1.1.17
- 1.5.0.8
- 1.5.0.9
- 1.5.0.10
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0a1
- 2.0a1pre
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.62% (0.01616) | 75.14th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.62% (0.01616) | 72.80th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.81% (0.00812) | 72.58th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.56% (0.00565) | 78.53th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.56% (0.00565) | 77.09th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.56% (0.00565) | 74.39th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (15)
- http://secunia.com/advisories/37699 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/37785 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securitytracker.com/id?1023346 vdb-entryx_refsource_SECTRACKPatch
- http://securitytracker.com/id?1023347 vdb-entryx_refsource_SECTRACKPatch
- http://www.mozilla.org/security/announce/2009/mfsa2009-71.html x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/37349 vdb-entryx_refsource_BID
- http://www.securityfocus.com/bid/37360 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2009/3547 vdb-entryx_refsource_VUPENPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-3987 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=503451 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=546729 x_refsource_CONFIRMIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54798 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-3987
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7958 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-3987
Change history (0)
No recorded changes yet.