N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
MANARTECH SECURITY ALERT
N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability
CVE Numbers
CVE-2026-18577
Affected Product
N-central — N-able
Threat Description
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Severity Scale
CRITICALHIGHMEDIUMLOW
Severity
HIGH
Affected Versions
To be reviewed
Recommended Mitigation
Apply 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.
Reference Links
https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm
https://www.cve.org/CVERecord?id=CVE-2026-18556
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577
https://www.n-able.com/blog/n-central-security-update-august-2-2026
https://nvd.nist.gov/vuln/detail/CVE-2026-18577
