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CVE-2023-28865

20
FAUCET Score

CVE-2023-28865 affects Diebold Nixdorf Vynamic Security Suite (VSS) versions prior to 3.3.0 SR15, 4.0.0 SR05, 4.1.0 SR03, and 4.2.0 SR02. The vulnerability stems from insufficient directory content validation during the Pre-Boot Authorization (PBA) process. This medium-severity flaw (CVSS 6.6) allows a physical attacker to manipulate hard disk contents, potentially leading to full compromise (confidentiality, integrity, and availability). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.3.0sr15CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.0sr05CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*
>= 4.1.0, < 4.1.0sr03CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.2.0sr02CPE matchmatch criteria
cpe:2.3:a:dieboldnixdorf:vynamic_security_suite:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.6MEDIUM

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

Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.7
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 22nd percentile among its peer group of 170 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.0 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 0.3 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