CVE-2026-18577

HighCVSS 8.1/10Known exploited (CISA KEV)Last modified Oct 23, 2026

Description

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

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-288

Affected software

Vendor	Product	Versions
N-able	N-central	<= 2026.3

References

https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htmPatch, Release Notes
https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/Release Notes
https://www.cve.org/CVERecord?id=CVE-2026-18556VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577US Government Resource
https://www.n-able.com/blog/n-central-security-update-august-2-2026Vendor Advisory

Timeline

Published: Aug 2, 2026
Last modified: Oct 23, 2026
Added to CISA KEV: Aug 3, 2026
NVD status: Analyzed

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