The Private Browsing feature in Apple Safari before 4.0 on Windows does not remove cookies from the alternate cookie store in unspecified circumstances upon (1) disabling of the feature or (2) exit of the application, which makes it easier for remote web servers to track users via a cookie.

Apple Safari before 4.0 does not prevent calls to the open-help-anchor URL handler by web sites, which allows remote attackers to open arbitrary local help files, and execute arbitrary code or obtain sensitive information, via a crafted call.

Cross-site scripting (XSS) vulnerability in Web Inspector in WebKit in Apple Safari before 4.0 allows user-assisted remote attackers to inject arbitrary web script or HTML, and read local files, via vectors related to script execution with incorrect privileges.

CoreGraphics in Apple Safari before 4.0 on Windows does not properly use arithmetic during automatic hinting of TrueType fonts, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted font data.

WebKit in Apple Safari before 4.0 does not properly initialize memory for Attr DOM objects, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted HTML document.

The XSLT implementation in WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 does not properly handle redirects, which allows remote attackers to read XML content from arbitrary web pages via a crafted document.

WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 uses predictable random numbers in JavaScript applications, which makes it easier for remote web servers to track the behavior of a Safari user during a session.

WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 does not properly handle constant (aka const) declarations in a type-conversion operation during JavaScript exception handling, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted HTML document.

Cross-site scripting (XSS) vulnerability in WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 allows remote attackers to inject arbitrary web script or HTML via vectors related to insufficient access control for standard JavaScript prototypes in other domains.

Apple Safari before 4.0 does not properly check for revoked Extended Validation (EV) certificates, which makes it easier for remote attackers to trick a user into accepting an invalid certificate.