CVE-2026-54223
Remote Code Execution via arbitrary file read and write in UBB.threads
- State
- Published
- Severity
- 8.6 High
- Published
- Jun 18, 2026
- Updated
- Jun 18, 2026
- Reserved
- Jun 12, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 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 | CERT-PL |
Weaknesses
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Products
| Product | Versions |
|---|---|
UBB.threadsUBB Systems |
|
References
- https://www.ubbcentral.com/product
- https://cert.pl/en/posts/2026/06/CVE-2026-54219third-party-advisory
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