Improper Access Control

Answer in brief

CVE-2026-19639 records a Medium severity (CVSS 4.3) vulnerability in Improper Access Control. The current sources do not mark it as known exploited. The current feed maps Tenable, Inc./Security Center (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 14, 2026Updated Aug 19, 2026Source checked Sep 28, 2026First seen by HOL Aug 14, 2026Material review Aug 19, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.3
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Tenable, Inc./Security Center (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:tenable:security_center::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Tenable, Inc./Security Centergeneric	>=0 <6.9.0	6.9.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for Tenable, Inc./Security Center.
Review the reported fix. Update Tenable, Inc./Security Center to 6.9.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 14, 2026

Sources and claim methodology

Source referencetenable.com

Upstream source description

An improper access control vulnerability exists where an authenticated non-administrative application user could potentially view settings outside of their assigned scope.

Quoted source text, attributed separately from HOL analysis.