ManageEngine Key Manager Plus: Insufficient Granularity of Access Control
CVE-2026-77779 is a high-severity insufficient granularity of access control 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 attacker with a low-privileged account, 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 0.52% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update ManageEngine Key Manager Plus to 7151 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Zoho | ManageEngine Key Manager Plus | before 7151 | 7151 |
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
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- LowLimited modification of data is possible.
- Availability
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L. Scored by CNA.
Official description
ManageEngine Key Manager Plus versions before 7151 were vulnerable to an Improper Access Control vulnerability that allowed authenticated low-privilege users to export keys outside their authorized scope.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insufficient Granularity of Access Control
The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack the required granularity
How developers prevent this class of flaw
- Access-control-policy protections must be reviewed for design inconsistency and common weaknesses. Access-control-policy definition and programming flow must be tested in pre-silicon, post-silicon testing.
More Insufficient Granularity of Access Control vulnerabilities (CWE-1220)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other references
Other vulnerabilities in ManageEngine Key Manager Plus
- 8.8 High severity
- 7.1 High severity
- 7.1 High severity
- 7.7 High severity
- 7.4 High severity
- 9.8 Critical severity
Recent Insufficient Granularity of Access Control vulnerabilities
- 8.5 High severity
- 7.3 High severity
- 7.4 High severity
- 7.1 High severity
- 7.8 High severity
- 8.6 High severity
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