---
title: "CVE-2019-10197\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-2019-10197?format=md
keywords: index, follow
---

# CVE-2019-10197

Publication date 3 September 2019

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.1 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2019-10197?format=md#impact-score)

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## Description

A flaw was found in samba versions 4.9.x up to 4.9.13, samba 4.10.x up to
4.10.8 and samba 4.11.x up to 4.11.0rc3, when certain parameters were set
in the samba configuration file. An unauthenticated attacker could use this
flaw to escape the shared directory and access the contents of directories
outside the share.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2019-10197?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| samba | 19.04 disco | Fixed 2:4.10.0+dfsg-0ubuntu2.4 |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

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

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

4.9.0+ only

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.1 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.1 · Critical |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10197)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-10197)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-10197)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-10197)

### Related Ubuntu Security Notices (USN)

+ [USN-4121-1](https://usn.ubuntu.com/USN-4121-1)
+ Samba vulnerability
+ 3 September 2019

### Other references

* <https://www.samba.org/samba/security/CVE-2019-10197.html>
* <https://www.cve.org/CVERecord?id=CVE-2019-10197>