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CVE-2023-25159

18
FAUCET Score

CVE-2023-25159 is a vulnerability in Nextcloud Server and Nextcloud Office that allows unauthorized access to document previews without an intended watermark. This affects Nextcloud Server versions 24.0.x prior to 24.0.8 and 25.0.x prior to 25.0.1, and Nextcloud Office (Richdocuments) App versions 6.x prior to 6.3.1 and 7.x prior to 7.0.1. Rated with a CVSS score of 5.3 (Medium), the vulnerability has a network attack vector and low attack complexity, requiring no user interaction. The potential impact is limited to a loss of confidentiality (C:L) due to the absence of the watermark, with no integrity or availability impact. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are minimal, indicating low public attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 24.0.4, <= 24.0.8CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
24.0.2CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:24.0.2:-:*:*:*:*:*:*
25.0.0CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:25.0.0:*:*:*:*:*:*:*
>= 6.0.0, < 6.3.1CPE matchmatch criteria
cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:*
7.0.0CPE matchmatch criteria
cpe:2.3:a:nextcloud:richdocuments:7.0.0:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

2.3LOW

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
0.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 23rd percentile among its peer group of 23,703 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

github.com / nextcloud/richdocuments/pull/2579
Broken Link
github.com / nextcloud/security-advisories/security/advisories/GHSA-92g2-h5jv-jjmg
Vendor Advisory
github.com / nextcloud/server/pull/34799
Broken Link
hackerone.com / reports/1745755
Permissions RequiredThird Party Advisory