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CVE-2026-18577Incomplete 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
8.2 HIGHEPSS 14.62%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.2 | HIGH | 4.0N-able (CNA) | 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 |
| 8.1 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Aug 6, 2026
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.
Details
- CVE ID
- CVE-2026-18577
- Status
- Analyzed
- Assigner (CNA)
- N-able
- Published
- Aug 2, 2026
- Last modified
- 2026-10-23 22:10 UTC
- Weaknesses
- CWE-288 · Authentication bypass using an alternate path or channel
Affected Products
As published by the CNA in the CVE record.
N-ableN-central1 version range
- through 2026.3
References
- documentation.n-able.com https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm
- status.n-able.com https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/
- cve.org https://www.cve.org/CVERecord?id=CVE-2026-18556
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577
- n-able.com https://www.n-able.com/blog/n-central-security-update-august-2-2026