PatchTheCVECVE-2021-4462: Employee Records System version 1.0 contains an unrestricted file upload vulnerability that allows a remote un
CVE-2021-4462 is a critical-severity flaw (CVSS 9.8) affecting employee records system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 3.4% (top 11%) |
| CISA exploited list | No |
| Weakness | CWE-434 |
| Published | 2025-11-10 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Write-up: www.exploit-db.com/exploits/49596
- Write-up: www.sourcecodester.com/php/11393/employee-records-system.html
- Nuclei scan template: Employee Records System 1.0 - Unauthenticated File Upload RCE
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-4462?
employee records system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2021-4462 being exploited?
CVE-2021-4462 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-4462 affect?
CVE-2021-4462 affects employee records system. Severity is critical (CVSS 9.8). 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 applica
How urgent is CVE-2021-4462?
Priority 70/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action