# September 2026 Security Updates #1 for XCP-ng 8.3 LTS

DevFeed: [September 2026 Security Updates #1 for XCP-ng 8.3 LTS](<https://devfeed.tech/articles/september-2026-security-updates-1-for-xcp-ng-8-3-lts-12827.md>)

Original publisher: [Read original article](<https://xcp-ng.org/blog/2026/09/08/september-2026-security-updates-1-for-xcp-ng-8-3-lts/>)

Author: David Morel

Published: 2026-09-08T14:07:29Z

Content type: article

Language: en

Sources: [XCP-ng Blog](<https://devfeed.tech/sources/xcp-ng-blog.md>)

Topics: [Security](<https://devfeed.tech/topics/security.md>), [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [DDoS](<https://devfeed.tech/topics/ddos.md>), [Memory Leaks](<https://devfeed.tech/topics/memory-leaks.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [cve](<https://devfeed.tech/tags/cve.md>), [lts](<https://devfeed.tech/tags/lts.md>), [maintenance-updates](<https://devfeed.tech/tags/maintenance-updates.md>), [memory-leak](<https://devfeed.tech/tags/memory-leak.md>), [release](<https://devfeed.tech/tags/release.md>), [security](<https://devfeed.tech/tags/security.md>), [september-2026](<https://devfeed.tech/tags/september-2026.md>), [updates](<https://devfeed.tech/tags/updates.md>), [vulnerabilities](<https://devfeed.tech/tags/vulnerabilities.md>)

## AI overview

This article announces September 2026 security updates for XCP-ng 8.3 LTS. The fixes address vulnerabilities in Xen, oxenstored, and Tapdisk, including memory leaks, denial-of-service conditions, and out-of-bounds accesses that could allow code execution with administrator privileges in dom0. One Xen issue does not affect supported XCP-ng 8.3 LTS installations and is deferred for defense in depth.

## Source excerpt

New security and maintenance updates are available for XCP-ng 8.3 LTS. This includes update to Xen, oxenstored and blktap.