CVE-2013-1337
Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows...
Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows Communication Foundation (WCF) endpoint authentication in certain situations involving passwords over HTTPS, which allows remote attackers to bypass authentication by sending queries to an endpoint, aka "Authentication Bypass Vulnerability."
Exploit likelihood
What each source reports
NVD Score used
Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows Communication Foundation (WCF) endpoint authentication in certain situations involving passwords over HTTPS, which allows remote attackers to bypass authentication by sending queries to an endpoint, aka "Authentication Bypass Vulnerability."
- Record
CVE-2013-1337- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows Communication Foundation (WCF) endpoint authentication in certain situations involving passwords over HTTPS, which allows remote attackers to bypass authentication by sending queries to an endpoint, aka "Authentication Bypass Vulnerability."
- Record
CVE-2013-1337- Updated
- 2026-11-02
EUVDEUVD-2013-1377 No score
Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows Communication Foundation (WCF) endpoint authentication in certain situations involving passwords over HTTPS, which allows remote attackers to bypass authentication by sending queries to an endpoint, aka "Authentication Bypass Vulnerability."
- Record
EUVD-2013-1377- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-73vm-jqp4-fcg6 No score
Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows...
Microsoft .NET Framework 4.5 does not properly create policy requirements for custom Windows Communication Foundation (WCF) endpoint authentication in certain situations involving passwords over HTTPS, which allows remote attackers to bypass authentication by sending queries to an endpoint, aka "Authentication Bypass Vulnerability."
- Record
GHSA-73vm-jqp4-fcg6- Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-1337 is a high vulnerability (CVSS 7.5) in Microsoft .net Framework, published May 15, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 20.6%, the 97th percentile. No source names a fixed version.