CVE-2026-76980Network attack vectorHinoki check available

Stored credential disclosure via syslog source overwrite

Published Sep 23, 2026 · Updated Sep 23, 2026

Data exposure in Zoho Corporation ManageEngine Firewall Analyzer and OpManager 12.8.709 and earlier allows remote attackers to obtain credentials. The syslog collector trusts each datagram's source host to overwrite the monitored firewall's device IP, then uses that IP for a later CLI connection. The attacker needs UDP reachability to the syslog listener; OpManager is affected only with the Firewall Analyzer plugin enabled, and the CLI session discloses stored firewall credentials.

CVSS severityUnavailable
Unscored
EPSS probability0.39%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Data exposure in Zoho Corporation ManageEngine Firewall Analyzer and OpManager 12.8.709 and earlier allows remote attackers to obtain credentials. The syslog collector trusts each datagram's source host to overwrite the monitored firewall's device IP, then uses that IP for a later CLI connection. The attacker needs UDP reachability to the syslog listener; OpManager is affected only with the Firewall Analyzer plugin enabled, and the CLI session discloses stored firewall credentials.

The record

CVE
CVE-2026-76980
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
Zoho Corporation
Product
ManageEngine Firewall Analyzer
Classifications
T1187
Attack vector
network
Privileges
unauthenticated

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 privilegesunauthenticated

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1187Forced Authentication

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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