Vulnerability · Published Oct 31, 2025 · Assigned by Canon_EMEA
CVE-2025-11843Therefore™ Online and Therefore™ On-Premises contains an account impersonation issue, which could potentially allow the attacker to access all the stored data
High 8.8
In plain English
A high-severity authentication bypass by spoofing in Therefore Online and Therefore On-Premises from Therefore Corporation GmbH. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Official description
Therefore Corporation GmbH has recently become aware that Therefore™ Online and Therefore™ 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Therefore Corporation GmbH | Therefore Online and Therefore On-Premises | 0 – through 2025 |
Weakness: CWE-290 · Vector: 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
References
- https://www.canon-europe.com/psirt/advisory-information/ vendor-advisory, mitigation