Vulnerability · Published Jan 26, 2026 · Assigned by SEC-VLab
CVE-2025-59095Hard-coded Key for PIN Encryption in dormakaba Kaba exos 9300
Medium 6.8
In plain English
A medium-severity hard-coded credentials in Kaba exos 9300 from dormakaba. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Official description
The program libraries (DLL) and binaries used by exos 9300 contain multiple hard-coded secrets. One notable example is the function "EncryptAndDecrypt" in the library Kaba.EXOS.common.dll. This algorithm uses a simple XOR encryption technique combined with a cryptographic key (cryptoKey) to transform each character of the input string. However, it's important to note that this implementation does not provide strong encryption and should not be considered secure for sensitive data. It's more of a custom encryption approach rather than a common algorithm used in cryptographic applications. The key itself is static and based on the founder's name of the company. The functionality is for example used to encrypt the user PINs before storing them in the MSSQL database.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| dormakaba | Kaba exos 9300 | <4.3.3 |
Weakness: CWE-798 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
References
- https://r.sec-consult.com/dormakaba technical-description
- https://r.sec-consult.com/dkexos third-party-advisory
- https://www.dormakabagroup.com/en/security-advisories vendor-advisory