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CVE-2025-5621— D-Link DIR-816 qosClassifier os command injection

CVSS 7.3 · High EPSS 6.90% · P93
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I. Basic Information for CVE-2025-5621

Vulnerability Information
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Vulnerability Title
D-Link DIR-816 qosClassifier os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been found in D-Link DIR-816 1.10CNB05 and classified as critical. Affected by this vulnerability is the function qosClassifier of the file /goform/qosClassifier. The manipulation of the argument dip_address/sip_address leads to os command injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DIR-816 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-816是中国友讯（D-Link）公司的一款无线路由器。 D-Link DIR-816 1.10CNB05版本存在安全漏洞，该漏洞源于文件/goform/qosClassifier中参数dip_address/sip_address的错误操作导致os命令注入。
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

VendorProductAffected VersionsCPESubscribe
D-LinkDIR-816 1.10CNB05 -

II. Public POCs for CVE-2025-5621

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 10676 chars
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III. Intelligence Information for CVE-2025-5621

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Vendor Pages for CVE-2025-5621 (1)

Same Patch Batch · D-Link · 2025-06-04 · 5 CVEs total

CVE-2025-55728.8 HIGHD-Link DCS-932L setSystemEmail stack-based overflow
CVE-2025-56207.3 HIGHD-Link DIR-816 setipsec_config os command injection
CVE-2025-55736.3 MEDIUMD-Link DCS-932L setSystemWizard setSystemControl os command injection
CVE-2025-55716.3 MEDIUMD-Link DCS-932L setSystemAdmin os command injection

IV. Related Vulnerabilities

Same product: DIR-816
Same vendor: D-Link
Same weakness: CWE-78

V. Comments for CVE-2025-5621

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