CVE-2015-7765: ManageEngine OpManager hardcoded IntegrationUser password grants admin access

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 19 September 2026. Confidence: high.

high priorityHardcoded credentials give a direct path to administrator access, public exploit code exists, and the EPSS score is very high, though exploitation requires prior authenticated access.

What it is

ZOHO ManageEngine OpManager 11.5 build 11600 and earlier ships a hardcoded password of "plugin" for the IntegrationUser account. Anyone who knows that password can authenticate and escalate to administrator access. Because the credential is static and documented in public exploit material, the flaw undermines the product's authentication model entirely.

Impact

An attacker with the known password gains full administrator access to OpManager, giving complete control over confidentiality, integrity and availability of the managed environment.

Attack surface

Reachable over the network via the OpManager web interface; the attacker must already hold some authenticated access to leverage the IntegrationUser credential, and no user interaction is required.

Exploitation

Not listed in CISA KEV, but EPSS is 0.67284 (99.3rd percentile) and multiple references are tagged Exploit, including Packet Storm, Rapid7 and Exploit-DB entries, indicating public exploit code exists.

What to do

• Upgrade OpManager past 11.5 build 11600 to a release that removes the hardcoded IntegrationUser password.
• If upgrade is not immediately possible, disable or rename the IntegrationUser account and block its use.
• Restrict network access to the OpManager web interface to trusted management networks only.
• Rotate any credentials or integrations that may have relied on the IntegrationUser account.
• Audit logs for successful logins as IntegrationUser and for subsequent administrative actions.

Detection

• Search OpManager authentication logs for successful logins to the IntegrationUser account.
• Alert on administrative actions performed shortly after an IntegrationUser session begins.
• Monitor network traffic for access to OpManager management endpoints from unexpected source addresses.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.