4.3

CVE-2025-47794: nextcloud nextcloud_server Improper Access Control

CVSS: 4.3v3.1MediumAnalyzed
Published 16-05-2025Last modified 16-05-2025
Open JSON

Vulnerability summary

CVE-2025-47794 is a medium (CVSS 4.3) Improper Access Control vulnerability in nextcloud nextcloud_server. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 41.2% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v3.1 (NVD)
EPSS score
0.50%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-05-2025
    PublishedVulnerability first disclosed.
  2. 16-05-2025
    Last modifiedVulnerability information updated.

Description

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server prior to 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1, an attacker on a multi-user system may read temporary files from Nextcloud running with a different user account, or run a symlink attack. Nextcloud Server versions 29.0.13, 30.0.7, and 31.0.1 and Nextcloud Enterprise Server 26.0.13.13, 27.1.11.13, 28.0.14.4, 29.0.13, 30.0.7, and 31.0.1 fix the issue. No known workarounds are available.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

+0.02 pp

From 0.47% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.50%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Nextcloud2 products
  • nextcloud_server≥ 26.0.0, < 26.0.13.13 | ≥ 27.0.0, < 27.1.11.13 | ≥ 28.0.0, < 28.0.14.4 | ≥ 29.0.0, < 29.0.13 | ≥ 30.0.0, < 30.0.7 | ≥ 31.0.0, < 31.0.1
  • security-advisories≥ 26.0.0, < 26.0.13.13 | ≥ 27.0.0, < 27.1.11.13 | ≥ 28.0.0, < 28.0.14.4 | ≥ 29.0.0, < 29.0.13 | ≥ 30.0.0, < 30.0.7 | ≥ 31.0.0, < 31.0.1

1 vendor · 2 products

References

3 links