CVE-2017-0884

Q: How do I fix CVE-2017-0884?

Upgrade nextcloud server to 10.0.2 or later.

Q: Is CVE-2017-0884 being actively exploited?

Not that we know of. CVE-2017-0884 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.67% is the estimated probability that it will be exploited in the next 30 days. That is higher than 48% of all scored CVEs.

Q: How severe is CVE-2017-0884?

CVE-2017-0884 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2017-0884 affect?

Published advisories record a fix for nextcloud server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

4.3

CVSS v3

NVD

Description

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a creation of folders in read-only folders despite lacking permissions issue. Due to a logical error in the file caching layer an authenticated adversary is able to create empty folders inside a shared folder. Note that this only affects folders and files that the adversary has at least read-only permissions for.

CWE-275 CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

nextcloud serverNVD

Affected:>= 10.0.0, < 10.0.2Fixed in:10.0.2CVE-2017-0884derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

0.67%probability of exploitation in 30 days

48thpercentile

Moderate risk: more likely to be exploited than 48% of all known CVEs.

References

Patch1

nextcloud.com

Third-Party Advisory1

hackerone.com

Related Vulnerabilities

Other CWE-275 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-15379	Critical	9.8	86%	-	-
CVE-2017-16887	Critical	9.8	37%	-	-
CVE-2014-1632	High	8.1	10%	-	Fix
CVE-2017-17876	High	7.5	9.5%	-	-
CVE-2014-1631	High	7.5	9.3%	-	Fix
CVE-2015-7781	High	7.5	7.1%	-	-

Common questions

How do I fix CVE-2017-0884?

Upgrade nextcloud server to 10.0.2 or later.

Is CVE-2017-0884 being actively exploited?

Not that we know of. CVE-2017-0884 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.67% is the estimated probability that it will be exploited in the next 30 days. That is higher than 48% of all scored CVEs.

How severe is CVE-2017-0884?

CVE-2017-0884 has a CVSS v3 base score of 4.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2017-0884 affect?

Published advisories record a fix for nextcloud server (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.