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2.6

Apple Mac OS X may show false secure lock in Safari

CVE-2006-4390 · published 20 years ago
Summary

Mac OS X versions 10.3.9, 10.4 through 10.4.7 can display the lock icon for web sites even when the site’s identity is not verified. This makes it look like the connection is safe when it might not be. Update the operating system or apply the latest security patches to correct the behavior.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
apple mac_os_x 10.3.9
10.4
10.4.1
10.4.2
10.4.3
10.4.4
10.4.5
10.4.6
10.4.7
cpe:2.3:o:apple:mac_os_x:10.3.9:*:*:*:*:*:*:*
Original advisory text
CFNetwork in Apple Mac OS X 10.4 through 10.4.7 and 10.3.9 allows remote SSL sites to appear as trusted sites by using encryption without authentication, which can cause the lock icon in Safari to ...
CFNetwork in Apple Mac OS X 10.4 through 10.4.7 and 10.3.9 allows remote SSL sites to appear as trusted sites by using encryption without authentication, which can cause the lock icon in Safari to be displayed even when the site's identity cannot be trusted.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
2.6 Low
Exploitation
<1% chance of attack within 30 days
Timeline
Published3 Oct 2006
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2006-4390 · NVD
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