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CVE-2023-40261

20
FAUCET Score

CVE-2023-40261 describes a vulnerability in Diebold Nixdorf Vynamic Security Suite (VSS) versions prior to 3.3.0 SR17, 4.0.0 SR07, 4.1.0 SR04, 4.2.0 SR04, and 4.3.0 SR02, where the software fails to validate file attributes during the Pre-Boot Authorization (PBA) process. This allows a physical attacker to manipulate the system's hard disk contents, leading to high impact on confidentiality, integrity, and availability. Rated with a CVSS score of 6.8 (MEDIUM), this vulnerability requires physical access to the affected device but has low attack complexity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.3.0sr17CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.0sr07CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*
>= 4.1.0, < 4.1.0sr04CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.2.0sr04CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*
>= 4.3.0, < 4.3.0sr03CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 61st percentile among its peer group of 1,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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
ExploitThird Party Advisory
dieboldnixdorf.com / en-us/banking/portfolio/software/security
Vendor Advisory