CVE-2026-21809EPSS p0.4%

CVE-2026-21809CVE-2026-21809

Description

HCL BigFix Quantum Risk Analyzer has a certain validation process that provides overly descriptive error messages when it encounters malformed input which can allow an attacker to conduct more efficient reconnaissance and fine-tune automated fuzzing tools to produce valid input.

Scoring

CVSS 3.9 ()
VectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
EPSS0.09% probability of exploitation · percentile 0.4% · 2026-10-04T12:00:21Z
Last modified2026-08-28
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.