What’s Vulnerable › Vulnerabilities

CVE-2026-18577: N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-08-03
• EPSS: 14.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-08-02 · updated 2026-10-23
• Weakness: CWE-288

Description

An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1

Affected products

• N-able N-central: before 2026.3; 2026.3 — fixed in 2026.3

How to fix

Upgrade to a fixed version: N-able N-central 2026.3. Check the vendor advisory for mitigations.

References

• https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm
• https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/
• 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

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