What is the CVSS score of CVE-2018-8911?

CVE-2018-8911 has a CVSS 3.0 base score of 5.4 (Medium). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 1.0%.

Note Station CVE-2018-8911

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2018-05-09 security@synology.com

XSS Synology Note Station

5.4

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

May 09, 2018 - 13:29 nvd

MEDIUM 5.4

DescriptionNVD

AnalysisAI

Cross-site scripting (XSS) vulnerability in Attachment Preview in Synology Note Station before 2.5.1-0844 allows remote authenticated users to inject arbitrary web script or HTML via malicious. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross-site scripting (XSS) vulnerability in Attachment Preview in Synology Note Station before 2.5.1-0844 allows remote authenticated users to inject arbitrary web script or HTML via malicious attachments. Affected products include: Synology Note Station. Version information: before 2.5.1.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.