ManageEngine OpManager and Firewall Analyzer are widely used enterprise network management products; a command injection allowing RCE can disrupt operations and is newsworthy for IT teams.
CVE-2026-76978
Command injection in ManageEngine OpManager & Firewall Analyzer Diagnose Settings
Is CVE-2026-76978 being exploited?
Not confirmed. CVE-2026-76978 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 8.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-76978?
CVE-2026-76978 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-76978?
Yes. A fix has been recorded for CVE-2026-76978. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76978 affect?
CVE-2026-76978 affects ManageEngine OpManager <=12.8.709, ManageEngine Firewall Analyzer <=12.8.709. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76978?
Upgrade to vendor fixed version (>12.8.709); isolate affected hosts and review logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote command execution via Diagnose Settings allowing OS command execution, potential full system compromise and lateral movement.
Immediate action required
- affected< 12.8.710
- affected< 12.8.710
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
cisa ssvc
- exploitation
- none
- automatable
- no
- technical impact
- total
Assessed by CISA 23 Sept 2026 (SSVC 2.0.3).
timeline
- 23 Sept 2026CISA SSVC assessment: exploitation none
- 23 Sept 2026Published · 1 day later
- 24 Sept 2026CVE record last updated · 1 day later
- 24 Sept 2026Analysed by vulneraibility.com · same day later
- Linkmanageengine.com /itom/advisory/cve-2026-76978.html
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.