vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2016-9463

N/A
Published: March 28, 2017 at 02:46 AM UTC
Updated: June 17, 2026 at 12:56 AM UTC
2 products affected across 2 vendorsNextcloud/serverOwncloud

Using Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 by N/A?

Get instant alerts when new vulnerabilities affect Nextcloud Server & ownCloud Server Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
N/A
Exploit prediction
EPSS 4%

Description

Nextcloud Server before 9.0.54 and 10.0.1 & ownCloud Server before 9.1.2, 9.0.6, and 8.2.9 suffer from SMB User Authentication Bypass. Nextcloud/ownCloud include an optional and not by default enabled SMB authentication component that allows authenticating users against an SMB server. This backend is implemented in a way that tries to connect to a SMB server and if that succeeded consider the user logged-in. The backend did not properly take into account SMB servers that have any kind of anonymous auth configured. This is the default on SMB servers nowadays and allows an unauthenticated attacker to gain access to an account without valid credentials. Note: The SMB backend is disabled by default and requires manual configuration in the Nextcloud/ownCloud config file. If you have not configured the SMB backend then you're not affected by this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nextcloud/server· Nextcloudnextcloud-app
95%
v < 9.0.5410.0.0 ≤ v < 10.0.1
Affected range stops below 10.0.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.54, so it looks safe — our inference, not a vendor statement
Owncloud· Owncloud
95%
8.2.0 ≤ v < 8.2.99.0.0 ≤ v < 9.0.49.1.0 ≤ v < 9.1.2
Affected range stops below 8.2.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.0.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.1.2, so it looks safe — our inference, not a vendor statement

References (9)

x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/apps/commit/b85ace6840b8a6704641086bc3b8eb8e81cb2274
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/apps/commit/decb91fd31f4ffab191cbf09ce4e5c55c67a4087
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/owncloud/apps/commit/16cbccfc946c8711721fa684d78135ca1fb64791
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/owncloud/apps/commit/5d47e7b52646cf79edadd78ce10c754290cbb732
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/owncloud/apps/commit/a0e07b7ddd5a5fd850a6e07f8457d05b76a300b3
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://hackerone.com/reports/148151
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://nextcloud.com/security/advisory/?id=nc-sa-2016-006
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://owncloud.org/security/advisory/?id=oc-sa-2016-017

CVSS

6.8MEDIUM[email protected]
Confidentiality
PARTIAL
Integrity
PARTIAL
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-303CWE-287

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card