Is CVE-2021-42258 actively exploited?

CVE-2021-42258 has no public evidence of in-the-wild exploitation as of 2025-11-10.

What is the CVSS score for CVE-2021-42258?

CVE-2021-42258 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-42258?

Patch guidance is available from bqe security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-42258.

Which products are affected by CVE-2021-42258?

1 product: bqe billquick web suite.

Fix CVE-2021-42258 - CRITICAL bqe billquick web suite

Description

BQE BillQuick Web Suite 2018 through 2021 before 22.0.9.1 allows SQL injection for unauthenticated remote code execution, as exploited in the wild in October 2021 for ransomware installation. SQL injection can, for example, use the txtID (aka username) parameter. Successful exploitation can include the ability to execute arbitrary code as MSSQLSERVER$ via xp_cmdshell.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-89 · SQL Injection CWE-89 · SQL Injection

Metadata

Primary Vendor: BQE
Published: 10/22/2021
Last Modified: 11/10/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-42258

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary