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.

Based on data from the CrowdSec network, nearly all observed exploitation of CVE-2025-34509 is fully opportunistic, with attackers indiscriminately scanning the entire internet. These attacks are automated and lack any form of target selection or reconnaissance. Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2025-34509. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.

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