What Does Forever Day Bug Mean?A forever day bug refers to a known software bug that a manufacturer has no intention of patching. In most cases, instead of publishing a patch that fixes the vulnerability, the vendor simply adds some steps to user manuals explaining how to deal with the threat. However, this is not considered an ideal method.
The U.S. Cyber Emergency Response Team (US-CERT) regularly provides security bulletins that include vulnerability warnings for control systems. However, many system vendors neglect these warnings and refrain from developing ideal patches.
Forever days are also known as iDays or infinite days.