CVE-2009-4171 describes a denial-of-service vulnerability in Yahoo! Messenger 9.0.0.2162 and potentially other 9.0 versions. An ActiveX control within YahooBridgeLib.dll can be crashed by a remote attacker providing an excessively long argument to the RegisterMe method, leading to a NULL pointer dereference. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and partial availability impact, with no confidentiality or integrity impact. While there is no evidence of active exploitation (KEV: No), public exploit code exists on ExploitDB, though it has received minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
9.0.0.2162CPE matchmatch criteria | cpe:2.3:a:yahoo:messenger:9.0.0.2162:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:P
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.