Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N N U H H H 9.8 .7443 99.5 YES
AFFECTED Product Versions Fixed n/a n/a – —
TIMELINE Oct 11 Reserved by mitre Oct 22 Published (CNA: mitre) Nov 3 Added to CISA KEV, remediation due 2021-11-17
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.
| Date | Event | Detail |
|---|---|---|
| October 11, 2021 | Reserved | Reserved by mitre |
| October 22, 2021 | Published | Published (CNA: mitre) |
| November 3, 2021 | KEV ADDED | Added to CISA KEV, remediation due 2021-11-17 |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| n/a | n/a | — | n/a | — |
Authoritative record: CVE-2021-42258 at cve.org
Weaknesses: CWE-89
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-42258 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
