N-central 2026.4 HF1 Release Notes

Build Number: 2026.4.0.32

Last Updated: November 2nd, 2026 

Security Update 

Note:If you have already successfully upgraded to 2026.4.0.31, there is no need to upgrade to 2026.4.0.32. Version 2026.4.0.32 includes changes to accommodate servers that had the PMCM-12156 performance code drop applied. If you have not yet upgraded, please proceed with the upgrade to 2026.4.0.32.

N-central runs on AlmaLinux 9, and this hotfix updates the underlying operating system to the latest available updates, including security fixes for CVE-2026-98432, CVE-2026-111497 and CVE-2026-114406. CVE-2026-98432 is a critical-rated vulnerability (CVSS 9.8) in the Linux kernel that a remote attacker could exploit with specially timed network requests to crash the system or potentially corrupt memory. CVE-2026-114406 removes trust for root CA certificates that signed weak intermediate certificates issued by eMudhra, which could otherwise allow a man-in-the-middle attacker to issue certificates that clients using the system CA store would trust.

N-central does not make use of the Brotli decoder affected by CVE-2026-111497 and is therefore not vulnerable. As part of following best practices, the update has been applied to the server in this release.

Customers running on-premises N-central deployments should upgrade to N-central 2026.4 HF1 as soon as possible to protect their environment. Hosted N-central servers are upgraded by N-able.

This hotfix also includes a performance fix for the submission of patch vulnerability data. See Bug Fixes.

Download links:

N-central

N-central CMMC Download (For CMMC Subscribed Accounts) 

Additional Information 

This release supersedes N-central 2026.4 (build 2026.4.0.27). To learn what’s included in the 2026.4 release, see N-central 2026.4 Release Notes.

Supported Upgrade Paths 

The following upgrade paths are supported for 2026.4 HF1: Build Number: 2026.4.0.32

Upgrading FromSupported
2025.4Yes
2026.1Yes
2026.2Yes
2026.3Yes
2026.3.1 (Hotfix 1 to Hotfix 4)Yes
2026.4 (build 2026.4.0.27)Yes
EarlierNo – upgrade to a supported version first

For on-premises installations, refer to the upgrade guide: https://documentation.n-able.com/N-central/userguide/Content/ReleaseDocs/Install_Config/InstallConfig_Upgrade.htm

Bug Fixes

Performance

IssueDetails
PMCM-12156Summary: Improved performance when devices submit patch vulnerability data.

Issue: When many devices submitted patch vulnerability data, the server ran a separate database query for each submitted vulnerability while holding a server-wide lock, which could stall the user interface.

Fix: Updated the submission process to look up the data in a single query for each submission.

For More Information: 

Support: https://me.n-able.com/s/ 

Uptime Page: https://uptime.n-able.com/ 

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