VULNERABILITY INTELLIGENCE
CVE-2009-4171
CVSS score4.3 MEDIUM
EPSS probability5.09%
CISA KEVNot currently listed
Published2009-12-02
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:N/I:N/A:P
Description
An ActiveX control in YahooBridgeLib.dll for Yahoo! Messenger 9.0.0.2162, and possibly other 9.0 versions, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by calling the RegisterMe method with a long argument.
Weakness classification
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer