An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 2
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
N-Able N-Central
cpe:2.3:a:n-able:n-central:*:*:*:*:*:*:*:*
|
— |
2026.3
|
|
N-Able N-Central
cpe:2.3:a:n-able:n-central:2026.3:-:*:*:*:*:*:*
|
— | — |
References 5
https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2…
a5532a13-c4dd-4202-bef1-e0b8f2f8d12b
https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-c…
a5532a13-c4dd-4202-bef1-e0b8f2f8d12b
https://www.cve.org/CVERecord?id=CVE-2026-18556
a5532a13-c4dd-4202-bef1-e0b8f2f8d12b
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026…
134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.n-able.com/blog/n-central-security-update-august-2-2026
134c704f-9b21-4f2e-91b3-4a467353bcc0