How severe is CVE-2025-66545?

CVE-2025-66545 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-66545 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66545?

CVE-2025-66545 affects Nextcloud Group Folders. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66545?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-66545 have an EU (EUVD) identifier?

Yes. CVE-2025-66545 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201463.

When was CVE-2025-66545 published?

CVE-2025-66545 was published on 2025-12-05 and last updated on 2026-06-17.

CVE-2025-66545

CVE-2025-66545 is a low-severity vulnerability in Nextcloud Group Folders with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-707.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201463
Weakness: CWE-707
Affected product: Nextcloud Group Folders
Published: 2025-12-05
Last modified: 2026-06-17

Description

Nextcloud Groupfolders provides admin-configured folders shared by everyone in a group or team. Prior to 14.0.11, 15.3.12, 16.0.15, 17.0.14, 18.1.8, 19.1.8, and 20.1.2, a user with read-only permission can restore a file from the trash bin. This vulnerability is fixed in 14.0.11, 15.3.12, 16.0.15, 17.0.14, 18.1.8, 19.1.8, and 20.1.2.

Frequently asked questions

What is CVE-2025-66545?: Nextcloud Groupfolders provides admin-configured folders shared by everyone in a group or team. Prior to 14.0.11, 15.3.12, 16.0.15, 17.0.14, 18.1.8, 19.1.8, and 20.1.2, a user with read-only permission can restore a file from the trash bin. This vulnerability is fixed in 14.0.11, 15.3.12, 16.0.15, 17.0.14, 18.1.8, 19.1.8, and 20.1.2.
How severe is CVE-2025-66545?: CVE-2025-66545 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-66545 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66545?: CVE-2025-66545 affects Nextcloud Group Folders. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66545?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-66545 have an EU (EUVD) identifier?: Yes. CVE-2025-66545 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201463.
When was CVE-2025-66545 published?: CVE-2025-66545 was published on 2025-12-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nextcloud:group_folders:*:*:*:*:*:*:*:*

More vulnerabilities in Nextcloud Group Folders

CVE-2020-8153 — High (CVSS 8.1): Improper access control in Groupfolders app 4.0.3 allowed to delete hidden directories when when renaming an accessible…
CVE-2025-47793 — Medium (CVSS 4.3): Nextcloud Server is a self hosted personal cloud system, and the Nextcloud Groupfolders app provides admin-configured…

All CVEs affecting Nextcloud Group Folders →

Other CWE-707 (Improper Neutralization) vulnerabilities

CVE-2023-46689 — High (CVSS 8.8): Improper neutralization in Intel(R) Power Gadget software for macOS all versions may allow an authenticated user to…
CVE-2023-42773 — High (CVSS 8.8): Improper neutralization in Intel(R) Power Gadget software for Windows all versions may allow an authenticated user to…
CVE-2026-4249 — High (CVSS 8.6): The throttling event handling mechanism in multiple WSO2 products accepts user-supplied JSON payloads without…
CVE-2024-43572 — High (CVSS 7.8): Microsoft Management Console Remote Code Execution Vulnerability
CVE-2019-10052 — High (CVSS 7.5): An issue was discovered in Suricata 4.1.3. If the network packet does not have the right length, the parser tries to…
CVE-2018-3918 — High (CVSS 7.5): An exploitable vulnerability exists in the remote servers of Samsung SmartThings Hub STH-ETH-250 - Firmware version…

Browse all CWE-707 (Improper Neutralization) vulnerabilities →