CVE-2009-4565 describes a critical vulnerability in Sendmail versions prior to 8.14.4, where improper handling of a null character in an X.509 certificate's Common Name field allows for security bypasses. This flaw enables man-in-the-middle attacks to spoof SSL-based SMTP servers and permits remote attackers to bypass access restrictions using crafted certificates. With a CVSS score of 7.5, this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to unauthorized access and information disclosure. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 8.14.3CPE matchmatch criteria | cpe:2.3:a:sendmail:sendmail:*:*:*:*:*:*:*:* | ||
2.6CPE matchmatch criteria | cpe:2.3:a:sendmail:sendmail:2.6:*:*:*:*:*:*:* | ||
2.6.1CPE matchmatch criteria | cpe:2.3:a:sendmail:sendmail:2.6.1:*:*:*:*:*:*:* | ||
3.0CPE matchmatch criteria | cpe:2.3:a:sendmail:sendmail:3.0:*:*:*:*:*:*:* | ||
3.0.1CPE matchmatch criteria | cpe:2.3:a:sendmail:sendmail:3.0.1:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P
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.