XML Injection vulnerability

Answer in brief

CVE-2026-76979 records a High severity (CVSS 7.7) vulnerability in XML Injection vulnerability. The current sources do not mark it as known exploited. The current feed maps ZohoCorp/ManageEngine Firewall Analyzer (generic), Zohocorp/ManageEngine OpManager (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 Sep 23, 2026Updated Sep 23, 2026Source checked Sep 23, 2026First seen by HOL Sep 23, 2026Material review Sep 23, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.7
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.7. 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 ZohoCorp/ManageEngine Firewall Analyzer (generic), Zohocorp/ManageEngine OpManager (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
ZohoCorp/ManageEngine Firewall Analyzergeneric	>=0 <12.8.710	12.8.710
Zohocorp/ManageEngine OpManagergeneric	>=0 <12.8.710	12.8.710

Recommended response

Check inventory. Check lockfiles and deployed manifests for ZohoCorp/ManageEngine Firewall Analyzer, Zohocorp/ManageEngine OpManager.
Review the reported fix. Update ZohoCorp/ManageEngine Firewall Analyzer to 12.8.710; Zohocorp/ManageEngine OpManager to 12.8.710 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 23, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 23, 2026

Sources and claim methodology

Source referencemanageengine.com

Upstream source description

ZohoCorp ManageEngine OpManager and Firewall Analyzer versions 12.8.709 and below were vulnerable to an XML Injection vulnerability in the Rule Tracking Compare Policies feature.

Quoted source text, attributed separately from HOL analysis.