CVE-2026-76978Network attack vector

Low-privilege firewall command execution via Diagnose parameter

Published Sep 23, 2026 · Updated Sep 23, 2026

Command injection in ManageEngine Firewall Analyzer and OpManager 12.8.709 and earlier allows remote authenticated users to run firewall CLI commands. The Diagnose Settings handler inserts a crafted request parameter into a CLI command and sends it to the monitored firewall with credentials stored by the product. Exploitation requires a low-privilege product account and Firewall Analyzer, or OpManager with the Firewall Analyzer Plugin enabled; successful requests run arbitrary commands on the firewall.

CVSS severityUnavailable
Unscored
EPSS probability3.72%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in ManageEngine Firewall Analyzer and OpManager 12.8.709 and earlier allows remote authenticated users to run firewall CLI commands. The Diagnose Settings handler inserts a crafted request parameter into a CLI command and sends it to the monitored firewall with credentials stored by the product. Exploitation requires a low-privilege product account and Firewall Analyzer, or OpManager with the Firewall Analyzer Plugin enabled; successful requests run arbitrary commands on the firewall.

The record

CVE
CVE-2026-76978
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
Zoho Corporation
Product
ManageEngine Firewall Analyzer
Classifications
T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <12.8.710

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zoho Corporation · ManageEngine Firewall Analyzerversion=0 <12.8.710
Zoho Corporation · ManageEngine OpManagerversion=0 <12.8.710

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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