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CVE-2018-8911

19
FAUCET Score

CVE-2018-8911 describes a cross-site scripting (XSS) vulnerability in the Attachment Preview feature of Synology Note Station versions prior to 2.5.1-0844. This medium-severity flaw allows remote authenticated users to inject arbitrary web script or HTML through malicious attachments. While the vulnerability has a CVSS score of 5.4, indicating low impact on confidentiality and integrity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.5.1-0844CPE matchmatch criteria
cpe:2.3:a:synology:note_station:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.3
Impact Score
3.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 93rd percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

synology.com / zh-tw/support/security/Synology_SA_18_03
Vendor Advisory