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CVE-2025-13776: Finka-Faktura Hard Coded Credentials (CVSS 8.6)

CVE-2025-13776 is a high severity hard coded credentials in Finka-Faktura with a CVSS score of 8.6. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Last updated: Jun 17, 2026

Quick answer

Direct answer

CVE-2025-13776 is a high severity hard coded credentials in Finka-Faktura with a CVSS score of 8.6. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Risk scores

CVSS base score
8.6HIGH
EPSS probability
0.15%
Higher than 4 percent of all CVEs
CISA KEV
Not listed
CVSS metricWhat it means
Attack vector (AV:A)Adjacent network
Attack complexity (AC:L)Low complexity
Attack requirements (AT:N)No attack requirements
Privileges required (PR:N)No privileges required
User interaction (UI:N)No user interaction
Confidentiality (VC:H)High confidentiality impact
Integrity (VI:H)High integrity impact
Availability (VA:N)No availability impact

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

About Finka-Faktura

CVE-2025-13776 affects Finka-Faktura, a product from Finka. Before acting, confirm where Finka-Faktura runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.

What the flaw is

In plain terms: Multiple Finka programs use hard-coded Firebird database credentials (shared across all instances of this software). A malicious attacker in local network who knows default credentials is able to read and edit database content. This vulnerability has been fixed in version: Finka-FK 18.5, Finka-KPR 16.6, Finka-Płace 13.4, Finka-Faktura 18.3, Finka-Magazyn 8.3, Finka-STW 12.3

The weakness class is Hard Coded Credentials. A password or key is built into the software.

Based on its CVSS vector, the flaw needs local or adjacent access, needs no login, and needs no user interaction. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Affected versions and timeline

FieldDetail
ProductFinka-Faktura
Affected versionsFinka-Faktura before 18.3; Finka-Fk before 18.5; Finka-Kpr before 16.6; Finka-Magazyn before 8.3; Finka-Place before 13.4; Finka-Stw before 12.3
PublishedFeb 24, 2026
Last modifiedJun 17, 2026
Added to CISA KEVNot listed
Assigning CNAcvd@cert.pl

How to detect it

  • Inventory every instance of Finka-Faktura and record the running version against the affected range above.
  • Check external attack surface scans for internet facing instances of the component.
  • Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
  • Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.

How to fix it

  • Apply the fixed version of Finka-Faktura named in the vendor advisory.
  • If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
  • Rescan after the change to prove the exposure is gone, then close the ticket.

CTEM action plan

CTEM stageWhat to do for this CVE
ScopeAdd every business service that depends on Finka-Faktura to the current CTEM cycle.
DiscoverFind all instances, including shadow and cloud deployments, and record versions and exposure.
PrioritizeRank using EPSS and CVSS together with asset exposure and business impact.
ValidateConfirm the flaw is reachable and exploitable in your environment and that compensating controls work.
MobilizeAssign the fix to the asset owner with a due date matched to the priority, then verify closure.

CWE References

Technical References

Frequently asked questions

CVE-2025-13776 is a high severity hard coded credentials in Finka-Faktura with a CVSS score of 8.6. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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