CVE-2025-46270VulnerabilityPublished 20 Jan 2026Updated 21 Jan 2026

CVE-2025-46270: MedDream PACS Premium · Cross-site Scripting

Affects MedDream PACS PremiumSource CVE Database V5

Not known to be exploited · CVSS 6.1 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

6.1Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 28% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Changed
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 20 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
MedDreamMedDream PACS Premium	Affected =7.3.6.870	Fixed in–

AI-suggested

Organizations should prioritize the following mitigations: 1) Monitor MedDream vendor communications for patches addressing CVE-2025-46270 and apply them promptly once available. 2) Implement strict input validation and output encoding on all user-supplied data within the PACS web interface to prevent script injection. 3) Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4) Conduct user training focused on recognizing and avoiding phishing attempts and suspicious URLs. 5) Use web application firewalls (WAFs) to detect and block malicious requests targeting the fetchPriorStudies functionality. 6) Regularly audit and monitor logs for unusual access patterns or suspicious URL requests. 7) Segment PACS systems from general network access to reduce exposure. These steps go beyond generic advice by focusing on immediate protective controls and user awareness tailored to this specific vulnerability.

Description

CVE-2025-46270 is a reflected cross-site scripting (XSS) vulnerability found in MedDream PACS Premium version 7.3.6.870, specifically in the fetchPriorStudies functionality. An attacker can craft a malicious URL that, when visited by a user, executes arbitrary JavaScript code in the context of the victim's browser. This vulnerability requires user interaction (clicking the malicious link) but does not require authentication. The CVSS score is 6.1, indicating a medium severity with potential impacts on confidentiality and integrity but no direct availability impact. No known exploits are currently reported in the wild. European healthcare organizations using this PACS software are at risk of targeted phishing or social engineering attacks leveraging this vulnerability.

Impact

For European organizations, particularly those in the healthcare sector using MedDream PACS Premium, this vulnerability poses a risk of unauthorized disclosure of sensitive patient data and potential manipulation of user sessions. Exploitation could enable attackers to steal authentication tokens, perform actions on behalf of legitimate users, or deliver further malware payloads via injected scripts. This can undermine patient privacy, violate GDPR regulations, and disrupt trust in healthcare IT systems. Although the vulnerability does not directly impact system availability, the indirect consequences such as data breaches or compliance violations can lead to significant financial and reputational damage. The requirement for user interaction means phishing or social engineering campaigns could be used to exploit this vulnerability, increasing the risk in environments with less user security awareness.

Summary

CVE-2025-46270 is a reflected cross-site scripting (XSS) vulnerability categorized under CWE-79, affecting MedDream PACS Premium version 7.3.6.870. The vulnerability resides in the fetchPriorStudies functionality, where user-supplied input is improperly neutralized during web page generation. This flaw allows an attacker to craft a malicious URL that, when accessed by a victim, executes arbitrary JavaScript code within the victim's browser session. The attack vector is network-based (AV:N), requires no privileges (PR:N), but does require user interaction (UI:R). The vulnerability has a scope change (S:C), meaning it can affect resources beyond the vulnerable component. The impact affects confidentiality and integrity (C:L/I:L) but not availability (A:N). Exploitation could lead to session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of the user. Although no public exploits are known, the presence of this vulnerability in a healthcare PACS system is concerning due to the sensitive nature of medical data and the criticality of healthcare operations. The vulnerability was reserved in August 2025 and published in January 2026. No official patches were listed at the time of reporting, emphasizing the need for immediate mitigation steps.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 27 Jan 2026, 20:08 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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