CISA ADP Vulnrichment

Answer in brief

CVE-2026-77506 records a Medium severity (CVSS 4.8) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Znuny/Znuny (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 20, 2026Updated Aug 25, 2026Source checked Aug 25, 2026First seen by HOL Aug 20, 2026Material review Aug 25, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 4.8. 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 Znuny/Znuny (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Znuny/Znunygeneric	>=6.0 <6.5.22	6.5.22

Recommended response

Check inventory. Check lockfiles and deployed manifests for Znuny/Znuny.
Review the reported fix. Update Znuny/Znuny to 6.5.22 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 20, 2026

Sources and claim methodology

Source referenceznuny.org

Upstream source description

Znuny before LTS 6.5.22 allows AgentTicketEmailResend template XSS.

Quoted source text, attributed separately from HOL analysis.