8.2

CVE-2026-18577

Warnung
Medienbericht

Incomplete patch leads to administrative account takeover

An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
N-ableN-central Version < 2026.3
N-ableN-central Version2026.3 Update-
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03.08.2026: CISA Known Exploited Vulnerabilities (KEV) Catalog

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

Schwachstelle

N-able N-central contains an authentication bypass using an alternate path or channel allows for authentication bypass and account takeover in N-central. This vulnerability is the result of an incomplete patch for CVE-2026-18556.

Beschreibung

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.

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.53% 0.833
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
a5532a13-c4dd-4202-bef1-e0b8f2f8d12b 8.2 0 0
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-288 Authentication Bypass Using an Alternate Path or Channel

The product requires authentication, but the product has an alternate path or channel that does not require authentication.

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https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm
Patch
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-2026-18556
VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577
US Government Resource
https://www.n-able.com/blog/n-central-security-update-august-2-2026
Vendor Advisory