What is CVE-2021-42258?

CVE-2021-42258 is a critical-severity vulnerability in Bqe Billquick_web_suite, classified under SQL Injection. CVSS score: 9.8/10. Published 2021-10-22.

How severe is CVE-2021-42258?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-42258 known to be exploited?

Yes. CVE-2021-42258 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 8 public proof-of-concept repositories are indexed.

SQL Injection in Bqe Billquick_web_suite

CVE-2021-42258

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 (…

Vulnerability class: SQL Injection

EPSS: 0.733 (99.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Bqe Billquick_web_suite
N/a — versions n/a

Weakness classification (CWE)

CWE-89 — SQL Injection

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2021-11-17.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2021-42258?: CVE-2021-42258 is a critical-severity vulnerability in Bqe Billquick_web_suite, classified under SQL Injection. CVSS score: 9.8/10. Published 2021-10-22.
How severe is CVE-2021-42258?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-42258 known to be exploited?: Yes. CVE-2021-42258 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 8 public proof-of-concept repositories are indexed.