Sitecore - Authentication Bypass (CVE-2025-34509)

Tracked as CVE-2025-34509, this vulnerability affects multiple versions of Sitecore Experience Manager (XM) and Experience Platform (XP). A hardcoded user account is present in the software, allowing unauthenticated remote attackers to gain unauthorized access to the administrative API via HTTP. This critical flaw poses a serious risk to systems by potentially exposing sensitive functions to external threat actors.

CrowdSec has been tracking this vulnerability and its exploits since 20th of June 2025.

CrowdSec network data shows that most actors exploiting CVE-2025-34509 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2025-34509 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2025-34509 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Observed attack attempts focus on URLs containing /sitecore/api/ssc/auth/login to compromise the admin panel.