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CVE-2025-8699

9.1 CRITICALEPSS 0.74%
  1. Published12 Sept 2025

Description

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 MiFare Classic NFC card and can be read and written back. By carefully observing changes in card dumps, one can identify fields that store the cash value of the card. Additionally, a checksum can be identified, which is created by XOR-ing the cash and an unknown field with a certain value. By updating the fields accordingly, arbitrary amounts of money can be loaded onto the card (up to $655,35) to pay for goods.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-8699 being actively exploited?

CVE-2025-8699 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.74%.

How severe is CVE-2025-8699?

CVE-2025-8699 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.74% probability of exploitation.

How do I fix CVE-2025-8699?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-8699 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.