HIGH
The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform proxy upgrade negotiation, which has unspecified impact and remote attack vectors, related to an "inherent problem" with the WebSocket specification
Published Dec 9, 2010
10.0
HIGHCVSS 2.0
EPSS 1.30%
Description
The WebSockets implementation in Mozilla Firefox 4 through 4.0 Beta 7 does not properly perform proxy upgrade negotiation, which has unspecified impact and remote attack vectors, related to an "inherent problem" with the WebSocket specification.
Affected products
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.
10.0 HIGH NVD
AV:N/AC:L/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.30% 0.01299
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01299
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.30% (0.01299) | 69.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.30% (0.01299) | 66.56th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.48% (0.00484) | 62.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.53% (0.01531) | 69.59th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.48% (0.00484) | 63.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.31% (0.00308) | 70.78th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.31% (0.00308) | 69.13th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.31% (0.00308) | 65.18th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (4)
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html vendor-advisoryx_refsource_SUSE
- http://osvdb.org/69758 vdb-entryx_refsource_OSVDB
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12251 vdb-entrysignaturex_refsource_OVAL
- https://wiki.mozilla.org/Platform/2010-12-07 x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html | vendor-advisoryx_refsource_SUSE | |
| http://osvdb.org/69758 | vdb-entryx_refsource_OSVDB | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12251 | vdb-entrysignaturex_refsource_OVAL | |
| https://wiki.mozilla.org/Platform/2010-12-07 | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 9, 2010
Updated Aug 7, 2024
Reserved Dec 9, 2010
Link CVE-2010-4508
CISA Vulnrichment
Updated n/a