Is CVE-2026-77691 being actively exploited?

CVE-2026-77691 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2026-77691?

CVE-2026-77691 has a CVSS 3.1 base score of 8.1 (HIGH).

CVE-2026-77691

HIGH · CVSS 8.1EPSS 2.3%EU EUVD

ZohoCorp ManageEngine Key Manager Plus versions before 7151 allow authenticated users to enter malicious input when configuring a Microsoft CA

Key facts

CVSS score: 8.1 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE): CWE-78
EPSS score: 2.3% (83th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2026-115735)
Published: November 3, 2026
NVD last modified: November 4, 2026
Status: Awaiting Analysis

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2026-115735 in the EU Vulnerability Database. Last updated in EUVD on November 4, 2026.

View on the EU Vulnerability Database

References

https://www.manageengine.com/key-manager/advisory/cve-2026-77691.html

Last updated November 4, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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