N-able N-central authentication bypass, exploited in Australia

Vulnerability

Published 2026-08-19

Verified 2026-09-19

N-able N-central authentication bypass, exploited in Australia

CVE-2026-18556 and CVE-2026-18577 are authentication-bypass issues in N-able N-central that may allow unauthorised access through an alternate path. ASD's ACSC has observed targeting of the product in Australia. Affects current versions including 2026.3. Vendor Hotfix 2 (build 2026.3.1.10, 6 August 2026) supersedes Hotfix 1. Review whether the console needs to face the internet.

Product

N-able N-central

Versions

Current versions including 2026.3

CVSS

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

AVAttack Vector: Network
ACAttack Complexity: High
ATAttack Requirements: None
PRPrivileges Required: None
UIUser Interaction: None
VCVulnerable System Confidentiality: High
VIVulnerable System Integrity: None
VAVulnerable System Availability: None
SCSubsequent System Confidentiality: None
SISubsequent System Integrity: None
SASubsequent System Availability: None

(CVSS 4.0, N-able CNA)

Exploited in Australia?

yes

Patch to

Hotfix 2 (2026.3.1.10)

Primary: ASD's ACSC advisory · Vendor: N-able security update · CVE: CVE-2026-18556, CVE-2026-18577 · Australian Cyber Security Magazine (secondary)

vulnerabilities australia