Description
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
None
Availability (Vulnerable System)
None
Confidentiality (Subsequent System)
Low
Integrity (Subsequent System)
Low
Availability (Subsequent System)
Low
E
Adjacent
CVSS 3.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- N-able / N-central0 – 2026.3
- N-able / N-central2026.3.1.7 – 2026.3.1.7
- N-able / N-central2026.3
- N-able / N-central2026.3 – 2026.3
Exploits & proofs of concept
- nucleiN-able N-central < 2026.3.1.10 - Authentication Bypassby patrick-threatmate
News coverage
- CISA Adds Exploited N-able N-central Flaw to KEV After Customer CompromisesThe Hacker News · 24d ago
- Attackers Exploit N-able Patch Bypass Flaw on RMM ServersDark Reading · 24d ago
- N-able warns of N-central auth bypass flaw exploited in attacksBleepingComputer · 24d ago
- N-able Says Attackers Take Over N-central Servers After Initial Fix Proves IncompleteThe Hacker News · 25d ago
Updated 6m ago · 8 sources