Is CVE-2021-4336 actively exploited?

No active exploitation of CVE-2021-4336 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-4336 be exploited remotely?

Yes. CVE-2021-4336 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-4336?

CVE-2021-4336 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-4336

CWE-89Published: May 28, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability was found in ITRS Group monitor-ninja up to 2021.11.1. It has been rated as critical. Affected by this issue is some unknown functionality of the file modules/reports/models/scheduled_reports.php. The manipulation leads to sql injection. Upgrading to version 2021.11.30 is able to address this issue. The name of the patch is 6da9080faec9bca1ca5342386c0421dca0a6c0cc. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-230084.

NVD Source

Risk Analysis

ITRS Group monitor-ninja contains a critical SQL injection vulnerability within its scheduled reports module. This allows remote attackers to compromise the database, necessitating an urgent update to the latest version.

No public exploit is known for this vulnerability, and it is not currently in CISA's KEV catalog.

Recommended Action

Upgrade to ITRS Group monitor-ninja version 2021.11.30 or later to patch the vulnerability.

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-2021-4336 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.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.