Is CVE-2021-39409 actively exploited?

No active exploitation of CVE-2021-39409 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-39409 be exploited remotely?

Yes. CVE-2021-39409 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-39409?

CVE-2021-39409 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-39409

CRITICAL

CVE-2021-39409

NVD-CWE-OtherPublished: June 24, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an administrator without needing to be authenticated.

NVD Source

Risk Analysis

The Online Student Rate System v1.0 allows any user to register as an administrator without authentication. This critical flaw is remotely exploitable and poses a significant risk to system integrity.

No public exploit is known, and the vulnerability is not in the CISA KEV catalog.

Recommended Action

Users should restrict access to the registration page or apply patches if available from the vendor.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-39409 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.