CVE-2026-77800: ManageEngine Key Manager Plus SAML authentication bypass

CVE-2026-77800 · Severity: high · CVSS 7.7 · Published 2026-11-03

ManageEngine Key Manager Plus is a centralized key and certificate management solution. When SAML single sign-on is enabled, an attacker with a SAML assertion from the same identity provider can bypass authentication and log in as an existing user. If the compromised account is an administrator, the attacker gains full control of the application and all cryptographic keys it manages.

Technologies: ManageEngine Key Manager Plus. Vendors: ManageEngine.

Quick answers

Is CVE-2026-77800 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-77800 being exploited in the wild.
How severe is CVE-2026-77800?
High severity, with a CVSS score of 7.7, published 3 November 2026.
Which products and versions are affected?
ManageEngine Key Manager Plus before 7151.
Is there a fix for CVE-2026-77800?
Yes: fixed in 7151. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-77800 attacked?
It is attacked over the network.
Am I affected by CVE-2026-77800?
Check whether you run ManageEngine Key Manager Plus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 7151

Technical details

The vulnerability is a SAML audience validation bypass in the single sign-on authentication mechanism. An unauthenticated attacker holding a valid SAML assertion issued for a different service provider by the same identity provider can submit it to Key Manager Plus to obtain an authenticated session. The fix validates that the SAML assertion's intended audience matches the Key Manager Plus instance.

Affected products

  • ManageEngine Key Manager Plus before 7151

Timeline

  • 2026-11-03: disclosed
  • 2026-08-21: patched

References

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