The function in charge to check whether the user is already logged in init.php in Interspire Email Marketer (IEM) prior to 6.1.6 allows remote attackers to bypass authentication and obtain administrative access by using the IEM_CookieLogin cookie with a specially crafted value.
Severity
CVSS 3.0
9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
37% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)