CyberSecBulletin
CVE-2026-77800NVD status: Awaiting Analysis

ManageEngine Key Manager Plus: Missing Critical Step in Authentication

Published Updated By the CyberSecBulletin desk

CVE-2026-77800 is a high-severity missing critical step in authentication vulnerability in ManageEngine Key Manager Plus from Zoho, with a CVSS 3.1 base score of 7.7 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 7151 as the first without the flaw, so updating ManageEngine Key Manager Plus to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.96% chance of exploitation within 30 days, higher than 62% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update ManageEngine Key Manager Plus to 7151 or a later version.
  2. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
ZohoManageEngine Key Manager Plusbefore 71517151

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
HighSuccess depends on conditions outside the attacker's control.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
LowPerformance or availability is reduced.

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L. Scored by CNA.

Official description

ManageEngine Key Manager Plus versions before 7151 are vulnerable to a SAML authentication bypass that allows attackers to log in using SAML assertions meant for another service provider.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Missing Critical Step in Authentication

The product implements an authentication technique, but it skips a step that weakens the technique.

More Missing Critical Step in Authentication vulnerabilities (CWE-304)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in ManageEngine Key Manager Plus

All ManageEngine Key Manager Plus vulnerabilities

Recent Missing Critical Step in Authentication vulnerabilities

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