CVE-2025-3481Network attack vector

Unauthenticated code execution via DICOM buffer overflow

Published May 22, 2025 · Updated May 22, 2025

Stack-based buffer overflow in MedDream PACS Server 7.3.3.840 allows remote attackers to execute code through a crafted DICOM file. The DICOM parser copies attacker-controlled data into a fixed-length stack buffer without validating its length. No authentication or user interaction is required, and successful exploitation runs code in the context of the service account.

CVSS severity9.8
Critical
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in MedDream PACS Server 7.3.3.840 allows remote attackers to execute code through a crafted DICOM file. The DICOM parser copies attacker-controlled data into a fixed-length stack buffer without validating its length. No authentication or user interaction is required, and successful exploitation runs code in the context of the service account.

The record

CVE
CVE-2025-3481
Published
May 22, 2025
Updated
May 22, 2025
Vendor
MedDream
Product
MedDream PACS Server
Classifications
CWE-121, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2025CVE publishedPublication date reported by the CVE source.
  2. May 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=MedDream PACS Premium 7.3.3.840

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MedDream · MedDream PACS Serverversion=MedDream PACS Premium 7.3.3.840

Published CVSS scores

9.8Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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