UNKNOWN CISA KEV

CVE-2026-18556

CVSS v3

—

Unknown

EPSS Score

0.3%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.

CISA Known Exploited Vulnerability

Date Added: 8/4/2026
Patch Due Date: 8/7/2026
Ransomware Use: Unknown

Technical details

Published: 8/1/2026
Last Modified: 8/1/2026

Frequently asked questions

What is CVE-2026-18556?

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.

Is CVE-2026-18556 actively exploited?

Yes. CVE-2026-18556 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 8/7/2026.

What is the CVSS score for CVE-2026-18556?

A CVSS score has not been assigned to CVE-2026-18556 yet.

Is CVE-2026-18556 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

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