CPE2025-052 – Vulnerability Mitigation/Remediation for Therefore Online and On-Premises

October 31, 2025
Canon Inc.

Description:

Therefore Corporation GmbH has recently become aware that Therefore™ Online and On-Premises contain an account impersonation vulnerability. A malicious user may potentially be able to impersonate the web service account or the account of a service using the API when connecting to the Therefore™ Server. If the malicious user gains this impersonation user access, then it is possible for them to access the documents stored in Therefore™. This impersonation is at application level (Therefore access level), not the operating system level.

Affected Versions:

All Therefore™ Online and On-Premises versions.

Remediation / Mitigation:

For Therefore™ Online systems, customers have already been patched. No further action is required from users or administrators.

For Therefore™ On-Premises systems, a hotfix is available to install. We strongly recommend patching all Therefore™ On-Premises systems, regardless of version. We request our customers to please contact your local Canon office or authorized reseller partner for more information.

CVE / CVSS:

CVE-2025-11843: Therefore™ Online and On-Premises contains an account impersonation issue, which could potentially allow the attacker to access all the stored data. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N Base Score: 8.8