manageengine_adselfservice_plus: Improper Authentication
CVE-2026-11374 is a critical-severity improper authentication vulnerability in manageengine_adselfservice_plus from Zoho, with a CVSS 3.1 base score of 9.0 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 6529 as the first without the flaw, so updating manageengine_adselfservice_plus to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 2.52% chance of exploitation within 30 days, higher than 85% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update manageengine_adselfservice_plus to 6529 or a later version.
- Update manageengine_recovery_manager_plus to 6321 or a later version.
- Update manageengine_m365_manager_plus to 4817 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Zoho | manageengine_adselfservice_plus | before 6529 | 6529 |
| Zoho | manageengine_recovery_manager_plus | before 6321 | 6321 |
| Zoho | manageengine_m365_manager_plus | before 4817 | 4817 |
| Zoho | manageengine_adaudit_plus | before 8703 | 8703 |
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
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H. Scored by CNA.
Official description
In ManageEngine ADSelfService Plus, RecoveryManager Plus, M365 Manager Plus, and ADAudit Plus, the SSO tickets generated to authenticate that session could be predicted by an unauthenticated user, leading to account takeover.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in manageengine_adselfservice_plus
- 8.4 High severity
- 8.1 High severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 8.8 High severity
Recent Improper Authentication vulnerabilities
- 7.8 High severity
- 8.4 High severity
- 8.1 High severity
- 9.8 Critical severity
- 7.3 High severity
- 7.3 High severity
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