CVE-2026-18556
Unauthenticated administrative account takeover
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.
This issue affects N-central: through 2026.1.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Unauthenticated administrative account takeover
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.
This issue affects N-central: through 2026.1.
- Record
CVE-2026-18556- CVSS 4.0
- 8.2 High
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 - Weakness
- CWE-288
- Updated
- 2026-11-02
EUVDEUVD-2026-51918
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.
This issue affects N-central: through 2026.1.
- Record
EUVD-2026-51918- CVSS 4.0
- 8.2 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fffv-7w63-p3xw
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows...
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.
This issue affects N-central: through 2026.1.
- Record
GHSA-fffv-7w63-p3xw- CVSS 4.0
- 8.2 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-288
- Updated
- 2026-11-02
CISA KEV No score
N-able N-central Authentication Bypass Using an Alternate Path or Channel Vulnerability
N-able N-central contains an authentication bypass using an alternate path or channel that allows for authentication bypass.
- Record
CVE-2026-18556- Weakness
- CWE-288
- Updated
- 2026-11-02
NVD
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.
This issue affects N-central: through 2026.1.
- Record
CVE-2026-18556- CVSS 4.0
- 8.2 High
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.4 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-288
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | CreamyG31337/ncentral-compromise-ioc-triage | 2026-08-06 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-18556 is a high vulnerability (CVSS 8.2) in N-able N-central, published August 1, 2026. CISA lists it as known to be exploited, since August 4, 2026. EUVD reports exploitation since August 4, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 7.88%, the 94th percentile. No source names a fixed version.