---
title: "CVE-2016-2124\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-2016-2124?format=md
keywords: index, follow
---

# CVE-2016-2124

Publication date 9 November 2021

Last updated 18 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**5.9 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2016-2124?format=md#impact-score)

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## Description

A flaw was found in the way samba implemented SMB1 authentication. An
attacker could use this flaw to retrieve the plaintext password sent over
the wire even if Kerberos authentication was required.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| samba | 26.04 LTS resolute | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 25.10 questing | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 25.04 plucky | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 24.10 oracular | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 24.04 LTS noble | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 23.10 mantic | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 23.04 lunar | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 22.10 kinetic | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 22.04 LTS jammy | Fixed 2:4.13.14+dfsg-0ubuntu1 |
| 21.10 impish | Fixed 2:4.13.14+dfsg-0ubuntu0.21.10.1 |
| 21.04 hirsute | Fixed 2:4.13.14+dfsg-0ubuntu0.21.04.1 |
| 20.04 LTS focal | Fixed 2:4.13.14+dfsg-0ubuntu0.20.04.1 |
| 18.04 LTS bionic | Fixed 2:4.7.6+dfsg~ubuntu-0ubuntu2.26 |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Vulnerable |

---

* [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**

5.9 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.9 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2124)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-2124)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-2124)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-2124)

### Related Ubuntu Security Notices (USN)

+ [USN-5142-1](https://usn.ubuntu.com/USN-5142-1)
+ Samba vulnerabilities
+ 11 November 2021

+ [USN-5174-1](https://usn.ubuntu.com/USN-5174-1)
+ Samba vulnerabilities
+ 6 December 2021

### Other references

* <https://www.samba.org/samba/security/CVE-2016-2124.html>
* <https://www.samba.org/samba/history/samba-4.13.14.html>
* <https://www.cve.org/CVERecord?id=CVE-2016-2124>