CVE-2021-4462 CRITICAL

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

Vendor Employee Records System
Product Employee Records System
Weakness CWE-434 · Unrestricted file upload
Published November 10, 2025
Last update April 7, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 10, 2025 CVE published
April 7, 2026 Record updated