Integer overflow in the TCP/IP implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code by sending a sequence of crafted UDP packets to a closed port, aka "Reference Counter Overflow Vulnerability."
Published Nov 8, 2011
9.8
CRITICALCVSS 3.1
EPSS 32.34%
Description
Integer overflow in the TCP/IP implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code by sending a sequence of crafted UDP packets to a closed port, aka "Reference Counter Overflow Vulnerability."
Affected products
No data.
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Oct 17, 2024 · SSVC 2.0.3
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 | 32.34% (0.32335) | 98.28th | v5 (v2026.06.15) |
| Sep 20, 2026 | 33.75% (0.33745) | 98.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 34.16% (0.34165) | 98.19th | v5 (v2026.06.15) |
| Feb 25, 2026 | 42.83% (0.42832) | 97.40th | v4 (v2025.03.14) |
| Dec 13, 2025 | 49.71% (0.49706) | 97.68th | v4 (v2025.03.14) |
| Sep 29, 2025 | 46.68% (0.46680) | 97.61th | v4 (v2025.03.14) |
| Mar 30, 2025 | 57.75% (0.57753) | 97.98th | v4 (v2025.03.14) |
| Mar 29, 2025 | 79.30% (0.79303) | 98.80th | v4 (v2025.03.14) |
| Mar 19, 2025 | 57.75% (0.57753) | 97.91th | v4 (v2025.03.14) |
| Mar 17, 2025 | 58.85% (0.58848) | 98.00th | v4 (v2025.03.14) |
| Dec 12, 2024 | 14.62% (0.14624) | 95.97th | v3 (v2023.03.01) |
| Nov 24, 2024 | 14.62% (0.14624) | 95.94th | v3 (v2023.03.01) |
| Aug 17, 2024 | 19.13% (0.19132) | 96.35th | v3 (v2023.03.01) |
| Jun 28, 2024 | 14.91% (0.14913) | 95.84th | v3 (v2023.03.01) |
| May 8, 2024 | 13.87% (0.13872) | 95.62th | v3 (v2023.03.01) |
| Mar 16, 2024 | 20.20% (0.20202) | 96.22th | v3 (v2023.03.01) |
| Jan 21, 2024 | 28.83% (0.28830) | 96.44th | v3 (v2023.03.01) |
| Nov 27, 2023 | 34.33% (0.34333) | 96.68th | v3 (v2023.03.01) |
| Jun 8, 2023 | 32.82% (0.32816) | 96.42th | v3 (v2023.03.01) |
| Mar 7, 2023 | 26.06% (0.26061) | 95.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 43.38% (0.43380) | 98.33th | v2 (v2022.01.01) |
| Oct 11, 2022 | 43.38% (0.43380) | 98.23th | v2 (v2022.01.01) |
| Apr 24, 2022 | 49.37% (0.49367) | 98.48th | v2 (v2022.01.01) |
| Feb 4, 2022 | 53.81% (0.53810) | 98.43th | v2 (v2022.01.01) |
References (3)
- http://www.securitytracker.com/id?1026290 vdb-entryx_refsource_SECTRACK
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-083 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13877 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://www.securitytracker.com/id?1026290 | vdb-entryx_refsource_SECTRACK | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-083 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13877 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.