CVE-2021-4462

CRITICAL EXPLOITED NUCLEI

Employee Records System 1.0 - Unauthenticated Unrestricted File Upload via uploadID.php

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-4462 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including sml. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit demonstrates an unauthenticated file upload vulnerability in Simple Employee Records System 1.0, allowing an attacker to upload a malicious PHP file and execute arbitrary commands via a GET parameter.

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.

Exploits (1)

exploitdb WORKING POC
by sml · textwebappsphp
https://www.exploit-db.com/exploits/49596

This exploit demonstrates an unauthenticated file upload vulnerability in Simple Employee Records System 1.0, allowing an attacker to upload a malicious PHP file and execute arbitrary commands via a GET parameter.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Simple Employee Records System v1.0
No auth needed
Prerequisites: Network access to the target system · Target system running Simple Employee Records System 1.0
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Employee Records System 1.0 - Unauthenticated File Upload RCE
CRITICALVERIFIEDby josephttd

Scores

CVSS v3 9.8
EPSS 0.0299
EPSS Percentile 85.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

VulnCheck KEV 2025-11-10
CWE
CWE-434
Status published
Products (2)
Employee Records System/Employee Records System 1.0
skittles/employee_records_system 1.0
Published Nov 10, 2025
Tracked Since Feb 18, 2026