Description

MedDream PACS Server DICOM File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MedDream PACS Server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of DICOM files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-25853.

Classification

CVE ID: CVE-2025-3484

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.8

CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products

Vendor: MedDream

Product: PACS Server

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.46% (probability of being exploited)

EPSS Percentile: 62.89% (scored less or equal to compared to others)

EPSS Date: 2025-06-06 (when was this score calculated)

Stakeholder-Specific Vulnerability Categorization (SSVC)

SSVC Exploitation: none

SSVC Technical Impact: total

SSVC Automatable: true

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3484
https://www.zerodayinitiative.com/advisories/ZDI-25-242/

Timeline