# DSA-5027-1: xorg-server security update

DSA-5027-1, released December 21, 2021, fixes 1 CVE in xorg-server (version 2:1.20.11-1+deb11u1). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/linux/dsa-5027-1
- Platform: Linux
- Released: Dec 21, 2021
- Priority: High (Closes CVE-2021-4008, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://security-tracker.debian.org/tracker/CVE-2021-4008

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [xorg-server](https://patchblox.com/security/data/product/linux/xorg-server.md) | Debian 11.6 (bullseye) | 2:1.20.11-1+deb11u1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-4008](https://patchblox.com/security/data/cve/CVE-2021-4008.md) | High | xorg-x11-server-common: X.Org is an open-source implementation of the X Window System | 7.8 | 0.0061 |  |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo