ZIP File Decryption Flaw in Dormakaba's Access Manager Firmware Update Tool
CVE-2025-59107

8.5HIGH

Key Information:

Vendor

Dormakaba

Status
Access Manager 92xx-k5
Vendor
CVE Published:
26 January 2026

What is CVE-2025-59107?

The Dormakaba FWServiceTool, utilized for updating the firmware of Access Managers, has a vulnerability concerning the static password used for decrypting firmware ZIP files. This password can be easily extracted, which compromises the security of the firmware across multiple versions. Any unauthorized individuals with access to the tool can exploit this weakness, potentially leading to unauthorized firmware modifications and overall system insecurity.

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Affected Version(s)

Access Manager 92xx-k5 All versions

References

https://r.sec-consult.com/dormakaba
technical-description
https://r.sec-consult.com/dkaccess
third-party-advisory
https://www.dormakabagroup.com/en/security-advisories
vendor-advisory

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Clemens Stockenreitner, SEC Consult Vulnerability Lab
Werner Schober, SEC Consult Vulnerability Lab
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