High [CVE-2026-18556 +1] Incomplete patch leads to administrative account takeover
This high-severity N-able advisory covers CVE-2026-18577 and CVE-2026-18556 affecting N-central.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 2 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
CISA Known Exploited Vulnerability
- Listed:
- Aug 4, 2026 · federal remediation due Aug 7, 2026
- 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.
KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.
- N-central through 2026.3
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation checklist
- N-able's August 10, 2026 notice directs on-premises customers to apply N-central 2026.3 Hotfix 2 (2026.3.1.10).
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Discussion(0)
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