What is CVE-2026-77800?

CVE-2026-77800 is a high-severity vulnerability in Zohocorp Manageengine Key Manager Plus, classified under Missing Critical Step in Authentication. CVSS score: 7.7/10. Published 2026-11-03.

How severe is CVE-2026-77800?

High severity. CVSS v3 base score is 7.7 out of 10.

Vulnerability in Zohocorp Manageengine Key Manager Plus

CVE-2026-77800

ManageEngine Key Manager Plus versions before 7151 are vulnerable to a SAML authentication bypass that allows attackers to log in using SAML assertions meant for another service provider.

Published 2026-11-03.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Zohocorp Manageengine Key Manager Plus

Weakness classification (CWE)

CWE-304 — Missing Critical Step in Authentication

References

0fc0942c-577d-436f-ae8e-945763c79b02

Frequently asked questions

What is CVE-2026-77800?: CVE-2026-77800 is a high-severity vulnerability in Zohocorp Manageengine Key Manager Plus, classified under Missing Critical Step in Authentication. CVSS score: 7.7/10. Published 2026-11-03.
How severe is CVE-2026-77800?: High severity. CVSS v3 base score is 7.7 out of 10.