CVE-2009-3275

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-09-21 · updated 2026-06-16
Weakness: CWE-134

Description

Blocks/Common/Src/Configuration/Manageability/Adm/AdmContentBuilder.cs in Microsoft patterns & practices Enterprise Library (aka EntLib) allows context-dependent attackers to cause a denial of service (CPU consumption) via an input string composed of many \ (backslash) characters followed by a " (double quote), related to a certain regular expression, aka a "ReDoS" vulnerability.

Affected products

Microsoft Enterprise Library: 3.1, 4.0, 4.1

References

http://www.checkmarx.com/Upload/Documents/PDF/Checkmarx_OWASP_IL_2009_ReDoS.pdf
http://www.securityfocus.com/archive/1/506419/100/0/threaded
http://www.checkmarx.com/Upload/Documents/PDF/Checkmarx_OWASP_IL_2009_ReDoS.pdf
http://www.securityfocus.com/archive/1/506419/100/0/threaded

Get alerted when CVE-2009-3275 or the next vulnerability affects your stack