# CVE-2021-42258: BQE BillQuick Web Suite SQL Injection Vulnerability

Source: https://junglewise.ai/threats/cve-2021-42258-bqe-billquick-web-suite-sql-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2021-42258 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2021-11-03

BQE BillQuick Web Suite contains a SQL injection vulnerability in the txtID (username) parameter. An unauthenticated remote attacker can exploit this to execute arbitrary code as the MSSQLSERVER$ service account via xp_cmdshell, which has been observed in the wild for ransomware deployment.

## Quick answers

**Is CVE-2021-42258 exploited in the wild?** Yes. CVE-2021-42258 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2021-42258?** Critical severity, with a CVSS score of 9.8, published 3 November 2021.

**Which products and versions are affected?** BQE BillQuick Web Suite 2018 through 2021 before 22.0.9.1.

**Is there a fix for CVE-2021-42258?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2021-42258 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2021-42258?** Check whether you run Bqe Billquick Web Suite. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- BQE BillQuick Web Suite 2018 through 2021 before 22.0.9.1

## Timeline

- 2021-10-22: disclosed: NVD Published Date
- 2021-10-01: exploited: Exploited in the wild in October 2021 for ransomware installation.
- 2021-11-03: kev added: Date added to CISA Known Exploited Vulnerabilities Catalog.