---
title: "CVE-2016-10009\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-2016-10009?format=md
keywords: index, follow
---

# CVE-2016-10009

Publication date 4 January 2017

Last updated 25 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**7.3 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2016-10009?format=md#impact-score)

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## Description

Untrusted search path vulnerability in ssh-agent.c in ssh-agent in OpenSSH
before 7.4 allows remote attackers to execute arbitrary local PKCS#11
modules by leveraging control over a forwarded agent-socket.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openssh | 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Not affected |
| 17.04 zesty | Not affected |
| 16.10 yakkety | Ignored end of life |
| 16.04 LTS xenial | Fixed 1:7.2p2-4ubuntu2.4 |
| 14.04 LTS trusty | Fixed 1:6.6p1-2ubuntu2.10 |
| 12.04 LTS precise | Ignored end of life |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2016-10009?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| openssh | * Upstream:   [786d599](https://github.com/openssh/openssh-portable/commit/786d5994da79151180cb14a6cf157ebbba61c0cc) * Upstream:   [25f8376](https://github.com/openssh/openssh-portable/commit/25f837646be8c2017c914d34be71ca435dfc0e07) * Upstream:   [b108ce9](https://github.com/openssh/openssh-portable/commit/b108ce92aae0ca0376dce9513d953be60e449ae1) * Upstream:   [1a321bf](https://github.com/openssh/openssh-portable/commit/1a321bfdb91defe3c4d9cca5651724ae167e5436) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.3 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.3 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-10009)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-10009)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-10009)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-10009)

### Related Ubuntu Security Notices (USN)

+ [USN-3538-1](https://usn.ubuntu.com/USN-3538-1)
+ OpenSSH vulnerabilities
+ 22 January 2018

### Other references

* <https://www.openssh.com/txt/release-7.4>
* <http://www.openwall.com/lists/oss-security/2016/12/19/2>
* <https://www.cve.org/CVERecord?id=CVE-2016-10009>