---
title: "CVE-2026-44978\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-44978?format=md
keywords: index, follow
---

# CVE-2026-44978

Publication date 20 July 2026

Last updated 7 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2026-44978?format=md#impact-score)

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## Description

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a heap
out-of-bounds read vulnerability within the FIPS-specific receive paths.
This vulnerability does not affect the default configuration of xrdp. The
vulnerability is only exploitable when the security layer is set to
security\_layer=negotiate or security\_layer=rdp, and the crypto level is
changed to crypt\_level=fips in xrdp.ini. In this specific non-default mode,
the server fails to validate the FIPS padding length field, leading to a
pointer underflow and a subsequent negative length calculation. An
unauthenticated remote attacker can exploit this by sending a crafted
FIPS-protected PDU, causing a heap out-of-bounds read that results in a
process crash and denial of service (DoS). However, since xrdp forks a new
process for each connection by default, an out-of-bounds read causing a
process crash is unlikely to bring down the entire xrdp service. This issue
has been fixed in version 0.10.6.1.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| xrdp | 26.04 LTS resolute | Needs evaluation |
| 25.10 questing | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| 14.04 LTS trusty | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-44978)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-44978)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-44978)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-44978)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-44978>
* <https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-9cg5-f7m7-ppvj>