The CBC mode in the TLS protocol, as used in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and other products, allows remote web servers to obtain plaintext data by triggering multiple requests to a third-party HTTPS server and sniffing the network during the resulting HTTPS session, aka "TLS Protocol Vulnerability."
Published Jul 10, 2012
4.3
MEDIUMCVSS 2.0
EPSS 9.76%
Description
The CBC mode in the TLS protocol, as used in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, Windows 7 Gold and SP1, and other products, allows remote web servers to obtain plaintext data by triggering multiple requests to a third-party HTTPS server and sniffing the network during the resulting HTTPS session, aka "TLS Protocol Vulnerability."
Affected products
No data.
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- r2
- r2
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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:M/Au:N/C:P/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 (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 9.76% (0.09762) | 95.39th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.70% (0.10698) | 95.23th | v5 (v2026.06.15) |
| Dec 28, 2025 | 13.82% (0.13818) | 94.06th | v4 (v2025.03.14) |
| Dec 27, 2025 | 15.04% (0.15039) | 94.38th | v4 (v2025.03.14) |
| Oct 28, 2025 | 13.82% (0.13818) | 93.98th | v4 (v2025.03.14) |
| Oct 27, 2025 | 15.04% (0.15039) | 94.29th | v4 (v2025.03.14) |
| Oct 18, 2025 | 13.82% (0.13818) | 93.97th | v4 (v2025.03.14) |
| Mar 30, 2025 | 9.74% (0.09738) | 92.19th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.39% (0.04389) | 81.28th | v4 (v2025.03.14) |
| Mar 28, 2025 | 9.74% (0.09738) | 92.20th | v4 (v2025.03.14) |
| Mar 27, 2025 | 4.39% (0.04389) | 87.48th | v4 (v2025.03.14) |
| Mar 20, 2025 | 9.74% (0.09738) | 92.28th | v4 (v2025.03.14) |
| Mar 19, 2025 | 4.39% (0.04389) | 87.63th | v4 (v2025.03.14) |
| Mar 17, 2025 | 9.74% (0.09738) | 92.36th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.67% (0.00673) | 80.50th | v3 (v2023.03.01) |
| Mar 23, 2024 | 0.57% (0.00575) | 77.52th | v3 (v2023.03.01) |
| Feb 15, 2024 | 0.54% (0.00537) | 76.56th | v3 (v2023.03.01) |
| Dec 6, 2023 | 0.54% (0.00537) | 74.55th | v3 (v2023.03.01) |
| Aug 4, 2023 | 0.76% (0.00760) | 78.78th | v3 (v2023.03.01) |
| May 31, 2023 | 0.56% (0.00556) | 74.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.46% (0.00459) | 71.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.99% (0.07994) | 93.27th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.99% (0.07994) | 92.64th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.99% (0.07994) | 81.81th | v2 (v2022.01.01) |
References (3)
- http://www.us-cert.gov/cas/techalerts/TA12-192A.html third-party-advisoryx_refsource_CERTUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-049 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15644 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://www.us-cert.gov/cas/techalerts/TA12-192A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-049 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15644 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.