CVE-2009-0133 describes a critical buffer overflow vulnerability in Microsoft HTML Help Workshop 4.74 and earlier. This flaw allows attackers to execute arbitrary code by crafting a malicious .hhp file with an excessively long "Index file" field. With a CVSS score of 10.0, it represents a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, multiple public exploits, including Metasploit modules and several ExploitDB entries, confirm its exploitability, though community discussion and media coverage are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.74CPE matchmatch criteria | cpe:2.3:a:microsoft:html_help_workshop:4.74:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.