What is CVE-2026-21808?
HCL BigFix Quantum Risk Analyzer generates highly detailed logging information by default which increases the risk of sensitive data leakage and can provide an attacker with internal application logic and architectural details.
The record classifies CVE-2026-21808 under weakness class CWE-532. Its CVSS v3 base vector states that the flaw requires local access to the host, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 40 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 4.1 — MEDIUM
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N - EPSS (FIRST)
- 0.1% probability of exploitation in the next 30 days, higher than 98.4% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-08-26, last modified 2026-08-27
Is CVE-2026-21808 being exploited?
It currently carries a trending score of 54 in the Threadlinqs vulnerability feed.
Affected products and versions
- HCLSoftware: BigFix Quantum Risk Analyzer
How to fix CVE-2026-21808
No vendor patch reference has been recorded for CVE-2026-21808 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-21808
No threat campaign in the Threadlinqs corpus currently references CVE-2026-21808, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.
Sources
Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.