CVE-2025-66911

Name: CVE-2025-66911
Creator: NVD / NIST
Published: 2025-12-19T15:15:56.9+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2025-66911 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Turms IM Server v0.10.0-SNAPSHOT and earlier contains a broken access control vulnerability in the user online status query functionality. The handleQueryUserOnlineStatusesRequest() method in UserServiceController.java allows any authenticated user to query the online status, device information, and login timestamps of arbitrary users without proper authorization checks.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

Turms IM Server v0.10.0-SNAPSHOT and earlier contains a broken access control vulnerability in the user online status query functionality. The handleQueryUserOnlineStatusesRequest() method in UserServiceController.java allows any authenticated user to query the online status, device information, and login timestamps of arbitrary users without proper authorization checks.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.28%

19.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Turms-Im	Turms	0.10.0-snapshot

References

https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66911_report.mdExploit, Third Party Advisory
https://github.com/turms-im/turmsProduct
https://github.com/turms-im/turms/blob/develop/turms-service/src/main/java/im/turms/service/domain/user/access/servicerequest/controller/UserServiceController.java#L239Product
https://github.com/Xzzz111/public_cve_report/blob/main/CVE-2025-66911_report.mdExploit, Third Party Advisory

Timeline

Published: Dec 19, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-66911?

How severe is CVE-2025-66911?

CVE-2025-66911 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2025-66911?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-66911?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST