CVE-2026-18577
N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability
IN CISA KEV
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
- Vendor
- N-able
- Product
- N-central
- CVSS 3.1
- 8.1 (high), scored by NVD (primary)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 4.0
- 8.2 (high), scored by a5532a13-c4dd-4202-bef1-e0b8f2f8d12bCVSS: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
- CWE-288
- Published
- 2026-08-02
- NVD modified
- 2026-08-04
- NVD status
- Analyzed
CISA KEV
- Date added
- 2026-08-03
- Due date
- 2026-08-06
- Ransomware use
- Unknown
- 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.
EPSS
14.6% chance of exploitation in the next 30 days (percentile 96th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
References
- documentation.n-able.com (Patch, Release Notes)
- status.n-able.com (Release Notes)
- www.cve.org (VDB Entry)
- www.cisa.gov (US Government Resource)
- www.n-able.com (Vendor Advisory)
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.