CVE-2020-12103
CWE-22Published: April 28, 2020· Updated: Jun 17, 2026
Official Description
In Tiny File Manager 2.4.1 there is a vulnerability in the ajax file backup copy functionality which allows authenticated users to create backup copies of files (with .bak extension) outside the scope in the same directory in which they are stored.
Technical Analysis
CVE-2020-12103 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.7.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
All References (6)
Quick Facts
Related CVEs (CWE-22)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-12103 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts