August 4, 2026 · Applied Cybernetics Group
CVE-2026-18556 — N-able N-central
N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability
- Added to KEV
2026-08-04- Federal due date
2026-08-07- Vendor
- N-able
- Product
- N-central
- EPSS
- 98.6th percentile (score 0.402, as of
2026-09-16) - NVD CVSS v3.1
- 7.4 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-18556
CISA short description
N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.
Required action
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.
NVD 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.