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CVE-2021-4462— Employee Records System v1.0 Arbitrary File Upload RCE

Quick assessment

Affected
Employee Records System Employee Records System
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Employee Records System是一个小型企业员工记录保存系统。 Employee Records System 1.0版本存在安全漏洞，该漏洞源于uploadID.php端点未执行服务器端验证，可能导致远程未经验证的攻击者上传和执行任意文件。

AI Predicted 9.8 Difficulty: Easy EPSS 3.19% · P87

Public Exploits 1

Nuclei · 1 CVE-2021-4462.yaml [template]

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
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I. Basic Information for CVE-2021-4462

Vulnerability Information
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Vulnerability Title
Employee Records System v1.0 Arbitrary File Upload RCE
Source: CVE Program / CVE List V5
Vulnerability Description
Employee Records System version 1.0 contains an unrestricted file upload vulnerability that allows a remote unauthenticated attacker to upload arbitrary files via the uploadID.php endpoint; uploaded files can be executed because the application does not perform proper server-side validation. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-06 UTC.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Employee Records System 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Employee Records System是一个小型企业员工记录保存系统。 Employee Records System 1.0版本存在安全漏洞，该漏洞源于uploadID.php端点未执行服务器端验证，可能导致远程未经验证的攻击者上传和执行任意文件。
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
Employee Records System Employee Records System 1.0 -

II. Public POCs for CVE-2021-4462

# POC Description Source Link Shenlong Link
1 Employee Records System version 1.0 contains an unrestricted file upload vulnerability in uploadID.php that allows remote unauthenticated attackers to upload arbitrary PHP files and achieve remote code execution. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-4462.yaml POC Details
2 None https://github.com/Pranjal6955/CVE-2021-4462 POC Details
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III. Intelligence Information for CVE-2021-4462

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Vendor Advisories for CVE-2021-4462 (1)

Exploits & Public PoCs for CVE-2021-4462 (1)

IV. Related Vulnerabilities

Same weakness: CWE-434

V. Comments for CVE-2021-4462

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