CVE-2021-42258

CRITICAL KEV RANSOMWARE NUCLEI

BQE BillQuick Web Suite 2018-2021 < 22.0.9.1 - Unauthenticated SQL Injection via txtID Parameter

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-42258 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021, with confirmed use in ransomware campaigns. EIP tracks 1 public exploit from researchers including h00die, including a Metasploit module auxiliary/gather/billquick_txtid_sqli. A Nuclei detection template is also available.

AI-analyzed exploit summary This Metasploit module exploits a SQL injection vulnerability in BillQuick Web Suite prior to version 22.0.9.1. It extracts database information, including the database name, banner, user, hostname, and the SecurityTable (user table).

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.

Exploits (1)

metasploit WORKING POC
by h00die · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/billquick_txtid_sqli.rb

This Metasploit module exploits a SQL injection vulnerability in BillQuick Web Suite prior to version 22.0.9.1. It extracts database information, including the database name, banner, user, hostname, and the SecurityTable (user table).

Classification
Working Poc 100%
Attack Type
Sqli
Complexity
Moderate
Reliability
Reliable
Target: BillQuick Web Suite < 22.0.9.1
No auth needed
Prerequisites: Network access to the target application · BillQuick Web Suite running on MSSQL
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

BillQuick Web Suite SQL Injection
CRITICALby dwisiswant0

Scores

CVSS v3 9.8
EPSS 0.9410
EPSS Percentile 99.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable yes
Technical Impact total

Details

CISA KEV 2021-11-03
VulnCheck KEV 2021-10-22
InTheWild.io 2021-10-22
ENISA EUVD EUVD-2021-29234
Ransomware Use Confirmed
CWE
CWE-89
Status published
Products (1)
bqe/billquick_web_suite 19 - 22.0.9.1
Published Oct 22, 2021
KEV Added Nov 03, 2021
Tracked Since Feb 18, 2026