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Predictable SSO Tickets in ManageEngine Products Leading to Account Takeover

IdentifiersCVE-2026-11374CWE-340

CVE-2026-11374 is a critical vulnerability affecting Zoho ManageEngine ADSelfService Plus, RecoveryManager Plus, M365 Manager Plus, and ADAudit Plus. In affected versions, the SSO tickets generated to authenticate a session are predictable. Because these authentication tickets can be guessed or derived by an unauthenticated remote attacker, the attacker can forge or reuse valid session-authentication material and impersonate legitimate users. The issue is fundamentally a weakness in the generation of security-sensitive values used for session authentication.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can allow an unauthenticated remote attacker to take over user accounts by predicting valid SSO tickets and authenticating as another user. Based on the provided severity metadata, the vulnerability has high confidentiality, integrity, and availability impact and a changed scope, indicating compromise of authenticated sessions and access to resources or actions available to the impersonated account.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure of affected ManageEngine instances to untrusted networks, restrict access to SSO-related interfaces to trusted administrative or internal networks, and monitor for anomalous session creation or account activity that could indicate ticket prediction and session abuse. The primary recommended action in the provided content is to apply vendor updates.

Remediation

Patch, then assume compromise.

Update affected Zoho ManageEngine products to vendor-patched versions that correct the predictable SSO ticket generation issue. The provided content specifically states that ADSelfService Plus, RecoveryManager Plus, M365 Manager Plus, and ADAudit Plus should be updated to remediate the vulnerability.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Zoho CorporationAdaudit Plusapplication
Zoho CorporationAdselfservice Plusapplication
Zoho CorporationM365 Manager Plusapplication
Zoho CorporationRecoverymanager Plusapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

5 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity4

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-11374
NVD
nvd.nist.gov/vuln/detail/CVE-2026-11374
MITRE CWE · CWE-340
cwe.mitre.org