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CVE-2011-3416
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 allows…
High8.5EPSS 43.7%
- Published
- Updated
- Reserved
- Assigned by
- microsoft
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 allows remote authenticated users to obtain access to arbitrary user accounts via a crafted username, aka "ASP.Net Forms Authentication Bypass Vulnerability."
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High8.5 | AV:N/AC:M/Au:S/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 43.7% · top 1.3% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.
Weakness
Affected products
n/a
- affected n/a
References (3)
- oval:org.mitre.oval:def:14363 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- TA11-347A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- MS11-100 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .