CVE-2016-3116

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to...

6.4 MediumPublic exploitFix available

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

19.8%Up 4.2 points since Feb 4, 2022

What each source reports

NVD Score used 6.4

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Record: CVE-2016-3116
CVSS 3.0: 6.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS 2.0: 5.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:N
Updated: 2026-11-02

CVE List No score

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Record: CVE-2016-3116
Updated: 2026-11-02

EUVDEUVD-2016-4169 No score

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Record: EUVD-2016-4169
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qrcr-w7v9-jxvw 6.4

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to...

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Record: GHSA-qrcr-w7v9-jxvw
CVSS 3.0: 6.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSV 6.4

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Record: CVE-2016-3116
CVSS 3.0: 6.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-3116 6.4

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Record: DEBIAN-CVE-2016-3116
CVSS 3.0: 6.4 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVMGASA-2016-0113 No score

Updated dropbear packages fix CVE-2016-3116

Updated dropbear package fixes security vulnerability:

Missing validation of X11 forwarding input could allow bypassing of authorized_keys command= restrictions (CVE-2016-3116).

Record: MGASA-2016-0113
Updated: 2026-11-02

Affected products

dropbear ssh project ssh

Affected packages

Affected packages
Package	Affected	Fixed
`dropbear` Debian:12	before 2016.72-1	2016.72-1
`dropbear` Debian:13	before 2016.72-1	2016.72-1
`dropbear` Debian:14	before 2016.72-1	2016.72-1
`dropbear` Mageia:5	before 2014.66-1.1.mga5	2014.66-1.1.mga5

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	DropBearSSHD 2015.71 - Command Injection	2016-03-03
PoC in GitHub	mxypoo/CVE-2016-3116-DropbearSSH	2022-02-22

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-3116 is a medium vulnerability (CVSS 6.4) in Dropbear Ssh Project Ssh, published March 16, 2016. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 19.8%, the 97th percentile. Fixed in dropbear 2016.72-1.

References

Show 10 moreShow less