The Forms Authentication feature in the ASP.NET subsystem in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0, when sliding expiry is enabled, does not properly handle cached content, which allows remote attackers to obtain access to arbitrary user accounts via a crafted URL, aka "ASP.NET Forms Authentication Ticket Caching Vulnerability."
Published Dec 30, 2011
9.3
HIGHCVSS 2.0
EPSS 34.31%
Description
The Forms Authentication feature in the ASP.NET subsystem in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0, when sliding expiry is enabled, does not properly handle cached content, which allows remote attackers to obtain access to arbitrary user accounts via a crafted URL, aka "ASP.NET Forms Authentication Ticket Caching Vulnerability."
Affected products
No data.
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- r2
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- sp3
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:C/I:C/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 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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 34.31% (0.34310) | 98.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 34.83% (0.34833) | 98.22th | v5 (v2026.06.15) |
| Oct 18, 2025 | 62.84% (0.62841) | 98.28th | v4 (v2025.03.14) |
| Mar 30, 2025 | 64.98% (0.64978) | 98.34th | v4 (v2025.03.14) |
| Mar 29, 2025 | 71.85% (0.71850) | 98.32th | v4 (v2025.03.14) |
| Mar 17, 2025 | 64.98% (0.64978) | 98.32th | v4 (v2025.03.14) |
| Mar 1, 2025 | 17.60% (0.17604) | 96.20th | v3 (v2023.03.01) |
| Oct 8, 2024 | 13.24% (0.13241) | 95.66th | v3 (v2023.03.01) |
| Aug 19, 2024 | 10.81% (0.10807) | 95.17th | v3 (v2023.03.01) |
| May 7, 2024 | 12.85% (0.12845) | 95.46th | v3 (v2023.03.01) |
| Mar 13, 2024 | 15.63% (0.15635) | 95.76th | v3 (v2023.03.01) |
| Jan 17, 2024 | 9.67% (0.09674) | 94.23th | v3 (v2023.03.01) |
| Jul 29, 2023 | 9.75% (0.09750) | 94.01th | v3 (v2023.03.01) |
| Mar 7, 2023 | 8.47% (0.08466) | 93.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 34.55% (0.34547) | 97.72th | v2 (v2022.01.01) |
| Feb 4, 2022 | 34.55% (0.34547) | 96.70th | v2 (v2022.01.01) |
References (4)
- http://www.securityfocus.com/bid/51203 vdb-entryx_refsource_BID
- http://www.us-cert.gov/cas/techalerts/TA11-347A.html third-party-advisoryx_refsource_CERTUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-100 vendor-advisoryx_refsource_MS
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14625 vdb-entrysignaturex_refsource_OVAL
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/51203 | vdb-entryx_refsource_BID | |
| http://www.us-cert.gov/cas/techalerts/TA11-347A.html | third-party-advisoryx_refsource_CERTUS Government Resource | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-100 | vendor-advisoryx_refsource_MS | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14625 | vdb-entrysignaturex_refsource_OVAL |
Change history (0)
No recorded changes yet.