What is CVE-2019-7421?

CVE-2019-7421 is a medium-severity vulnerability in Samsung Syncthru Web Service, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-03-21.

How severe is CVE-2019-7421?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Samsung Syncthru Web Service

CVE-2019-7421

XSS exists in SAMSUNG X7400GX SyncThru Web Service V6.A6.25 V11.01.05.25_08-21-2015 in "/sws.login/gnb/loginView.sws" in multiple parameters: contextpath and basedURL.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.015 (73.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Samsung Syncthru Web Service
Samsung X7400gx
Samsung X7400gx Firmware — versions 6.a6.25

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

packetstormsecurity.com/files/151584/SAMSUNG-X7400GX-Sync-Thru-Web-Cross-Site-S… (Exploit, VDB Entry, Third Party Advisory)
www.samsungprinter.com/ (Product)
www.samsung.com/Support/ProductSupport/download/index.aspx (Product)
seclists.org/fulldisclosure/2019/Feb/28 (mailing-list, Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2019-7421?: CVE-2019-7421 is a medium-severity vulnerability in Samsung Syncthru Web Service, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-03-21.
How severe is CVE-2019-7421?: Medium severity. CVSS v3 base score is 6.1 out of 10.