How severe is CVE-2025-8699?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2025-8699 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Kiosoft Stored Value Unattended Payment Solution

CVE-2025-8699

Some "Stored Value" Unattended Payment Solutions of KioSoft use vulnerable NFC cards. Attackers could potentially use this vulnerability to change the balance on the cards and generate money. The account balance is stored on an insecure Mi…

EPSS: 0.007 (49.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Kiosoft Stored Value Unattended Payment Solution — versions Current firmware/hardware as of Q2/2025

Weakness classification (CWE)

CWE-922

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

551230f0-3615-47bd-b7cc-93e92e730bbf (third-party-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2025-8699?: CVE-2025-8699 is a critical-severity vulnerability in Kiosoft Stored Value Unattended Payment Solution, classified under CWE-922. CVSS score: 9.1/10. Published 2025-09-12.
How severe is CVE-2025-8699?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2025-8699 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.