CVE-2026-18577
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Aug 3, 2026
- US federal agencies must remediate it by Aug 6, 2026 (BOD 22-01)
- Attacked 1 day before the vulnerability was made public
- Used in ransomware campaigns
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.
Source: CISA KEV · Nov 4, 2026 Sep 8, 2026 Sep 6, 2026 Sep 3, 2026 Aug 16, 2026 Aug 14, 2026
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HAffected products
| Vendors | Product | Versions |
|---|---|---|
| n-able | n-central | < 2026.3 |
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