IBM Data Risk Manager - Authentication Bypass (CVE-2020-4427)

CVE-2020-4427 is a critical vulnerability in IBM Data Risk Manager versions 2.0.1 through 2.0.6 that allows remote attackers to bypass SAML authentication by sending specially crafted HTTP requests. Exploiting this flaw could grant attackers full administrative access to the system, potentially leading to complete compromise of sensitive data and system controls.

CrowdSec has been tracking this vulnerability and its exploits since 29th of October 2025.

CrowdSec network observations suggest that most exploitation of CVE-2020-4427 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental. Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2020-4427 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2020-4427 is currently experiencing high visibility and active exploitation across the internet.

Attackers exploit the authentication bypass by sending crafted requests to the /albatross/saml/idpSelection endpoint, often using the userName=admin parameter to gain unauthorized administrative access.