Hard-coded Key for PIN Encryption in dormakaba Kaba exos 9300
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-798.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Kaba exos 9300 (dormakaba) Fixed in 4.3.3
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
dormakaba Kaba exos 9300 — dormakabagroup.com/en/security-advisories
7 records Highest priority Priority MEDIUM 3 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2025-36706 Hardcoded Legacy Accounts Allowing Control Over Access Managers in dormakaba Kaba exos 9300Priority MEDIUM 50
- TI-2025-36705 Unauthenticated SOAP API in dormakaba Kaba exos 9300Priority MEDIUM 48
- TI-2025-36707 Unauthenticated RPC Service in dormakaba Kaba exos 9300Priority MEDIUM 45
Timeline
- 2026-10-02 Threatist record created from CVE-2025-59095
- 2026-10-03 Alias added: GHSA-56rh-rcgf-8x9j
References
More dormakaba vulnerabilities
- TI-2024-38408 Dormakaba Saflok System 6000 Key Generation Cryptographic Weakness CVSS 4.0HIGH 8.7
- TI-2025-36706 Hardcoded Legacy Accounts Allowing Control Over Access Managers in dormakaba Kaba exos 9300 CVSS 4.0CRITICAL 9.3
- TI-2025-36712 Unauthenticated SOAP API in dormakaba access manager CVSS 4.0CRITICAL 9.3
- TI-2025-36718 Weak Default Passwords for SSH Access in dormakaba access manager CVSS 4.0CRITICAL 9.2
- TI-2025-36705 Unauthenticated SOAP API in dormakaba Kaba exos 9300 CVSS 4.0CRITICAL 9.3
- TI-2025-36714 Unauthenticated Path Traversal in dormakaba access manager CVSS 4.0HIGH 8.8
Sources
- CVE-2025-59095 · CVE Program
- CVE-2025-59095 · NVD
- FIRST EPSS
- GHSA-56rh-rcgf-8x9j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences