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CVE-2025-64011

Published: Dec 12, 2025Updated: Dec 19, 2025 Sources: CVE List NVD BDUCWE-639
4.3MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 81.2%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

Nextcloud Server 30.0.0 is vulnerable to an Insecure Direct Object Reference (IDOR) in the /core/preview endpoint. Any authenticated user can access previews of arbitrary files belonging to other users by manipulating the fileId parameter. This allows unauthorized disclosure of sensitive data, such as text files or images, without prior sharing permissions.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-639

Affected Products

nextcloud
oss-project·DEaka nextcloud server
nextcloud serverSaaSSaaS Service
Cloud & SaaS / saas-application
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
Nextcloud GmbH
commercial·DEaka nextcloud server, nextcloud calendar, nextcloud enterprise server
Nextcloud ServerSaaSSaaS Service
Cloud & SaaS / saas-application
and 1 more affected products View all →

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://drive.google.com/file/d/1eD3PN-u1caZYgGH96XHmJ7h_OBXEAHW4/view?usp=sharing
drive.google.com
https://nextcloud.com
nextcloud.com
https://gist.github.com/tarekramm/586dfe2d113fedfee6d71182570fc090
gist.github.com
and 4 more references View all →

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