CVE 8.6 HIGH

Remote Code Execution via arbitrary file read and write in UBB.threads_CVE-2026-54223

8.6 / 10
HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Description

UBB.threads is vulnerable to Path traversal, allowing attackers with privilege to edit templates to read and write any file on the application’s server that application has privileges to, what results in Remote Code Execution. 
Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.

Basic Information

ID CVE-2026-54223
Source CERT-PL
Published Jun 18, 2026 at 12:56
Modified Jun 18, 2026 at 13:11

Affected Product

Vendor UBB Systems
Product UBB.threads
Affected Versions UBB Systems UBB.threads 0

CWE Classification

References

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