CVE-2009-4171

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-12-02 · updated 2026-06-16
Weakness: CWE-119

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.

Affected products

yahoo Messenger: 9.0.0.2162

References

http://www.securityfocus.com/archive/1/507818/100/0/threaded
http://www.securityfocus.com/bid/37007
https://exchange.xforce.ibmcloud.com/vulnerabilities/54263
http://www.securityfocus.com/archive/1/507818/100/0/threaded
http://www.securityfocus.com/bid/37007
https://exchange.xforce.ibmcloud.com/vulnerabilities/54263

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