A remote overflow exists in Netscape navigator. The Netscape navigator fails to validate the password value in the HTML parsing code. With a long password value in a form field, a remote attacker can cause a buffer overflow and execute arbitrary code on the system, resulting in a loss of confidentiality and integrity.
Upgrade to version 4.76 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.