---
title: "CVE-2026-77800: ManageEngine Key Manager Plus - Authentication Bypass"
description: "ManageEngine Key Manager Plus < 7151 contains a SAML authentication bypass caused by improper validation of SAML assertions, letting attackers log in using assertions meant for another service provider, exploit requires crafted SAML assertions."
url: https://panop.io/threat-heartbeat/CVE-2026-77800/
---

# CVE-2026-77800 ManageEngine Key Manager Plus - Authentication Bypass

ManageEngine Key Manager Plus < 7151 contains a SAML authentication bypass caused by improper validation of SAML assertions, letting attackers log in using assertions meant for another service provider, exploit requires crafted SAML assertions.

CVSS base score 7.7 /10

High

CISA KEV

Not listed

Public exploit

None known

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-77800)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Published

3 November 2026

Updated

3 November 2026

Weakness

[CWE-304](https://cwe.mitre.org/data/definitions/304.html)

## Vendor fix

Update to version 7151 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-77800](https://nvd.nist.gov/vuln/detail/CVE-2026-77800)
- [https://www.manageengine.com/key-manager/advisory/cve-2026-77800.html](https://www.manageengine.com/key-manager/advisory/cve-2026-77800.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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