HTTP.sys in Microsoft Windows 8, Windows Server 2012, and Windows RT allows remote attackers to cause a denial of service (infinite loop) via a crafted HTTP header, aka "HTTP.sys Denial of Service Vulnerability."
Published May 15, 2013
7.8
HIGHCVSS 2.0
EPSS 54.66%
Description
HTTP.sys in Microsoft Windows 8, Windows Server 2012, and Windows RT allows remote attackers to cause a denial of service (infinite loop) via a crafted HTTP header, aka "HTTP.sys Denial of Service Vulnerability."
Affected products
No data.
- n/a
- n/a
- n/a
- 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.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
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 2, 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 (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 54.66% (0.54665) | 98.99th | v5 (v2026.06.15) |
| Jun 15, 2026 | 54.66% (0.54665) | 98.89th | v5 (v2026.06.15) |
| Oct 18, 2025 | 83.17% (0.83169) | 99.22th | v4 (v2025.03.14) |
| May 1, 2025 | 86.26% (0.86255) | 99.35th | v4 (v2025.03.14) |
| Mar 30, 2025 | 87.36% (0.87357) | 99.42th | v4 (v2025.03.14) |
| Mar 29, 2025 | 88.63% (0.88630) | 99.40th | v4 (v2025.03.14) |
| Mar 17, 2025 | 87.46% (0.87457) | 99.42th | v4 (v2025.03.14) |
| Dec 17, 2024 | 94.51% (0.94506) | 99.41th | v3 (v2023.03.01) |
| Dec 12, 2024 | 95.60% (0.95600) | 99.48th | v3 (v2023.03.01) |
| Jun 8, 2024 | 95.21% (0.95208) | 99.34th | v3 (v2023.03.01) |
| Apr 4, 2024 | 95.22% (0.95218) | 99.30th | v3 (v2023.03.01) |
| Nov 30, 2023 | 95.85% (0.95847) | 99.29th | v3 (v2023.03.01) |
| Oct 7, 2023 | 95.98% (0.95976) | 99.27th | v3 (v2023.03.01) |
| Aug 18, 2023 | 95.58% (0.95575) | 99.13th | v3 (v2023.03.01) |
| Jul 1, 2023 | 95.98% (0.95976) | 99.20th | v3 (v2023.03.01) |
| May 13, 2023 | 96.44% (0.96435) | 99.30th | v3 (v2023.03.01) |
| Mar 27, 2023 | 96.55% (0.96549) | 99.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.64% (0.96635) | 99.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 29.80% (0.29797) | 97.49th | v2 (v2022.01.01) |
| Feb 4, 2022 | 29.80% (0.29797) | 96.29th | v2 (v2022.01.01) |
References (3)
- http://www.us-cert.gov/ncas/alerts/TA13-134A third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-039 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16088 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://www.us-cert.gov/ncas/alerts/TA13-134A | third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-039 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16088 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.