What’s Vulnerable › Vulnerabilities

CVE-2023-33206

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-08-08 · updated 2026-06-17
• Weakness: CWE-354

Description

Diebold Nixdorf Vynamic Security Suite (VSS) before 3.3.0 SR16, 4.0.0 SR06, 4.1.0 SR04, 4.2.0 SR03, and 4.3.0 SR01 fails to validate symlinks 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.

Affected products

• Dieboldnixdorf Vynamic Security Suite: before 3.3.0sr16; from 4.0.0 before 4.0.0sr06; from 4.1.0 before 4.1.0sr04; from 4.2.0 before 4.2.0sr03; from 4.3.0 before 4.3.0sr01 — fixed in 3.3.0sr16, 4.0.0sr06, 4.1.0sr04, 4.2.0sr03, 4.3.0sr01

How to fix

Upgrade to a fixed version: Dieboldnixdorf Vynamic Security Suite 3.3.0sr16, 4.0.0sr06, 4.1.0sr04, 4.2.0sr03. Check the vendor advisory for mitigations.

References

• 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
• https://www.dieboldnixdorf.com/en-us/banking/portfolio/software/security/

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