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

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is in the KEV database since today.

The EPSS score is 0.01477.

Exploitation active

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
N-able N-central unaffected
Version Status Constraints
0 affected ≤ 2026.3
2026.3.1.7 unaffected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
N-able Subscribe
N-central Subscribe

Project Subscriptions

Vendors Products
N-able Subscribe
N-central Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://documentation.n-able.com/N-central/Release_Notes/GA/Content/N-central_2026.3_HF1_Release_Notes.htm cve-icon
https://status.n-able.com/2026/08/02/n-central-2026-3-hotfix-1-mitigation-for-cve-2026-18577/ cve-icon
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18577 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-18556 cve-icon
History

Mon, 03 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

 ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 03 Aug 2026 19:00:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-08-03T00:00:00+00:00', 'dueDate': '2026-08-06T00:00:00+00:00'}

Mon, 03 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sun, 02 Aug 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared N-able
N-able n-central
Vendors & Products N-able
N-able n-central

Sun, 02 Aug 2026 22:30:00 +0000

Type Values Removed Values Added
Description An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Title Incomplete patch leads to administrative account takeover
Weaknesses CWE-288
References
Metrics cvssV4_0

{'score': 8.2, 'vector': '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'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: N-able

Published:

Updated: 2026-08-03T19:58:23.103Z

Reserved: 2026-08-02T13:40:02.350Z

Link: CVE-2026-18577

cve-icon Vulnrichment

Updated: 2026-08-03T14:54:24.043Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-03T09:15:03Z

Weaknesses