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Vulnerability record · CVE-2021-33181 · published 1 June 2021

CVE-2021-33181: Synology video station server-side request forgery (ssrf) vulnerability

Synology · Video Station

Server-Side Request Forgery (SSRF) vulnerability in webapi component in Synology Video Station before 2.4.10-1632 allows remote authenticated users to send arbitrary request to intranet resources via unspecified vectors.

9.1 CVSS 3.1 Critical EPSS 0.97% · top 39.6% CWE-918 · Server-side request forgery (SSRF)
9.1CVSS 3.1 base score, v2 6.5
0.97%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Server-Side Request Forgery (SSRF) vulnerability in webapi component in Synology Video Station before 2.4.10-1632 allows remote authenticated users to send arbitrary request to intranet resources via unspecified vectors.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.synology.com/security/advisory/Synology_SA_21_04 Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_21_04 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2015-6912Synology video station command injection vulnerabilitySynology Video Station before 1.5-0763 allows remote attackers to execute arbitrary shell commands via shell metacharacters in the subtitle_codepage …EPSS 12%7.5CVE-2015-6911Synology video station sql injection vulnerabilitySQL injection vulnerability in Synology Video Station before 1.5-0763 allows remote attackers to execute arbitrary SQL commands via the id parameter …EPSS 2.4%7.5CVE-2015-6910Synology video station sql injection vulnerabilitySQL injection vulnerability in Synology Video Station before 1.5-0757 allows remote attackers to execute arbitrary SQL commands via the id parameter …EPSS 2.3%5.4CVE-2017-9556Synology video station cross-site scripting vulnerabilityCross-site scripting (XSS) vulnerability in Video Metadata Editor in Synology Video Station before 2.3.0-1435 allows remote authenticated attackers t…EPSS 0.79%5.4CVE-2015-9105Synology video station cross-site scripting vulnerabilityMultiple cross-site scripting (XSS) vulnerabilities in Synology Video Station 1.2 before 1.2-0455, 1.5 before 1.5-0772, and 1.6 before 1.6-0847 allow…EPSS 0.82%10.0CVE-2026-83548SonicWall SMA1000 pre-auth SSRF via alternate access pathThe SMA1000 Appliance Work Place interface exposes an unintended alternate access path that allows server-side request forgery before authentication.…KEVEPSS 8.8%analysed10.0CVE-2026-49869Kestra OSS auth bypass via path suffix match enables RCEKestra OSS AuthenticationFilter whitelists the public config endpoint using request.getPath().endsWith("/configs"), a suffix match instead of an exac…KEVEPSS 2.1%analysed9.3CVE-2026-64849MLflow unauthenticated webhook test endpoint SSRF via redirectMLflow before 3.15.0 validates the webhook URL only on the original request, while the delivery code follows redirects and re-resolves the hostname w…KEVEPSS 9.8%analysed

Source: NIST National Vulnerability Database (record CVE-2021-33181), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.