All vulnerabilities
CVE-2026-18556

N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability

N-able N-centralApplications & CMS
Open in ThreatlineRecord JSON
CVSS
8.2High
ExploitationExploited in the wildAdded to KEV 4 Aug 2026CISA KEV
Exploit odds (EPSS)7.88%Chance of exploitation activity in the next 30 days, higher than 94% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline7 Aug 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. CISA KEV
Patching is not enoughCISA requires federal agencies to look for signs of compromise on affected systems, not only patch (forensic triage under BOD 26-04). Treat exposed systems as possibly compromised. CISA guidance

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 1 Aug 2026, 19:59 UTCPublishedCVE List
  2. 4 Aug 2026Added to CISA KEVCISA KEV

Description

N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.

Text from CVE List

Affected versions 1

  • N-centralaffected: all versions through 2026.1CVE List

References 5