Diebold Nixdorf Vynamic Security Suite (VSS) before 3.3.0 SR15, 4.0.0 SR05, 4.1.0 SR03, and 4.2.0 SR02 fails to validate the directory cont…

published 2024-08-08 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-32486

cvss: 6.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

Diebold Nixdorf Vynamic Security Suite (VSS) before 3.3.0 SR15, 4.0.0 SR05, 4.1.0 SR03, and 4.2.0 SR02 fails to validate the directory contents of certain directories (e.g., ensuring the expected hash sum) during the Pre-Boot Authorization (PBA) process. This can be exploited by a physical attacker who is able to manipulate the contents of the system's hard disk.

Patch / fix

fixed in 1

dieboldnixdorf vynamic_security_suite 4.0.0sr05, 4.1.0.sr03, 4.2.0sr02

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-08-08)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

media.defcon.org https://media.defcon.org/DEF%20CON%2032/DEF%20CON%2032%20presentations/DEF%20CON%2032%20-%20Matt%20Burch%20-%20Where%E2%80%99s%20the%20Money%20-%20Defeating%20ATM%20Disk%20Encryption-white%20paper.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.6	CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	6.6	CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	6.6	CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

dieboldnixdorf vynamic_security_suite

Classification

Weakness

CWE-353 Missing Support for Integrity Check
CWE-345 Insufficient Verification of Data Authenticity

References

media.defcon.org /DEF%20CON%2032/DEF%20CON%2032%20presentations/DEF%20CON%2032%20-%20Matt%20Burch%20-%20Where%E2%80%99s%20the%2
exploit, third-party-advisory
dieboldnixdorf.com /en-us/banking/portfolio/software/security/
vendor-advisory

Sources

CVE List CVE-2023-28865
NVD CVE-2023-28865

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Summary