Is CVE-2021-4308 actively exploited?

No active exploitation of CVE-2021-4308 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-4308 be exploited remotely?

Yes. CVE-2021-4308 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-4308?

CVE-2021-4308 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-4308

CWE-89Published: January 8, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability was found in WebPA up to 3.1.1. It has been rated as critical. This issue affects some unknown processing. The manipulation leads to sql injection. Upgrading to version 3.1.2 is able to address this issue. The identifier of the patch is 8836c4f549181e885a68e0e7ca561fdbcbd04bf0. It is recommended to upgrade the affected component. The identifier VDB-217637 was assigned to this vulnerability.

NVD Source

Risk Analysis

WebPA is affected by a critical SQL injection vulnerability that allows remote attackers to manipulate database operations. The 9.8 CVSS score indicates that this flaw is highly dangerous and requires immediate attention. It is remotely exploitable with low complexity.

No public exploit is known for this vulnerability, and it is not in the CISA KEV.

Recommended Action

Upgrade WebPA to version 3.1.2 or later to address 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-2021-4308 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.