CVE-2021-34808
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I. Basic Information for CVE-2021-34808
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Server-Side Request Forgery (SSRF) vulnerability in cgi component in Synology Media Server before 1.8.3-2881 allows remote attackers to access intranet resources via unspecified vectors.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Synology Media Server 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Synology Media Server是一个媒体服务器。 Synology Media Server 1.8.3-2881 之前版本存在代码问题漏洞，该漏洞源于cgi组件的服务器端请求伪造(Server- Server Request Forgery, SSRF)漏洞，远程攻击者可利用该漏洞通过未指定的载体访问内网资源。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Synology | Media Server | unspecified ~ 1.8.3-2881 | - |
II. Public POCs for CVE-2021-34808
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://www.synology.com/security/advisory/Synology_SA_21_10x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-34808
Same Patch Batch · Synology · 2021-06-18 · 5 CVEs total
| CVE-2021-34810 | 9.9 CRITICAL | Synology Download Station 安全漏洞 |
| CVE-2021-34809 | 9.9 CRITICAL | Synology Download Station 命令注入漏洞 |
| CVE-2021-34812 | 5.8 MEDIUM | Synology Calendar 信任管理问题漏洞 |
| CVE-2021-34811 | 5.0 MEDIUM | Synology Download Station 代码问题漏洞 |
IV. Related Vulnerabilities
Same weakness: CWE-918
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python-utcp: SSRF via attacker-controlled OpenAPI servers[0] - CVE-2026-44589
nuxt-og-image SSRF — bypass of GHSA-pqhr-mp3f-hrpp / v6.2.5 - CVE-2026-44515
Nextcloud News: Authenticated blind SSRF via feed URL
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