High 8.2Known exploited (CISA KEV)Published Aug 2, 2026

CVE-2026-18577Incomplete patch leads to administrative account takeover

Updated under an hour ago (Oct 27, 2026, 2:00 AM ET)

Does this affect you?

It affects N-able N-central and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Aug 3, 2026; federal agencies had to remediate by Aug 6, 2026. Treat that date as your deadline.

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Exploited in the last 30 days

An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1

CVSS: 8.2 HIGH (v4.0, 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
Weakness (CWE): CWE-288
Known exploited: Added to CISA KEV Aug 3, 2026; federal remediation due Aug 6, 2026Apply 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 (exploitation in the next 30 days): 14.62% (percentile 97)
Assigned by: N-able
NVD analysis: Analyzed
Record last updated: Aug 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

N-able N-central n_able:n_central (from the name)	through 2026.3; 2026.3.1.7 not affected	CNA record
n-able n-central n-able:n-central	before 2026.3; 2026.3	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.