CVE-2016-9462

Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying restore...

4.3 Medium

Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying restore privileges when restoring a file. The restore capability of Nextcloud/ownCloud was not verifying whether a user has only read-only access to a share. Thus a user with read-only access was able to restore old versions.

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: None
Integrity: Low
Availability: None

Exploit likelihood

1.87%Up 0.6 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2016-9462
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0: 4.0 MediumAV:N/AC:L/Au:S/C:N/I:P/A:N
Weakness: CWE-275, CWE-284
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-9462
Weakness: CWE-275
Updated: 2026-11-02

EUVDEUVD-2016-10268 No score

Record: EUVD-2016-10268
Updated: 2026-11-03

GitHub AdvisoriesGHSA-xfx5-6q2x-cp8j 4.3

Nextcloud Server before 9.0.52 & ownCloud Server before 9.0.4 are not properly verifying restore...

Record: GHSA-xfx5-6q2x-cp8j
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness: CWE-284
Updated: 2026-11-02

OSV 4.3

Record: CVE-2016-9462
CVSS 3.0: 4.3 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2016-9462 is a medium vulnerability (CVSS 4.3) in Nextcloud Server, published March 28, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.87%, the 79th percentile. No source names a fixed version.

References

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