Mozilla sent Firefox Version 25.0.1 to the release channel. Although the Release Notes indicate that the update includes security fixes, the Security Advisories page has yet to be updated.
To get the update now, select "Help" from the Firefox menu at the upper left of the browser window, then pick "About Firefox." Mac users need to select "About Firefox" from the Firefox menu.
Sophos came to the same conclusion that I did since the Security Advisories page still hasn't been updated: Firefox 25.0.1 – the security update that wasn't? | Naked Security (http://nakedsecurity.sophos.com/2013/11/16/firefox-25-0-1-the-security-update-that-wasnt/).