CVE-2021-47904
HIGH EPSS 44.9%
Published Jan 23, 20265mo ago · Modified Jun 17, 20261w ago
8.7 CVSS 4.0
Published Jan 23, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago
Description
PhreeBooks 5.2.3 contains an authenticated file upload vulnerability in the Image Manager that allows remote code execution. Attackers can upload a malicious PHP web shell by exploiting unrestricted file type uploads to gain command execution on the server.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
44.9% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt
References 5
- gist.github.com https://gist.github.com/joswr1ght/22f40787de19d80d110b37fb79ac3985
- exploit-db.com https://www.exploit-db.com/exploits/46645
- exploit-db.com https://www.exploit-db.com/exploits/49524
- phreesoft.com https://www.phreesoft.com/
- vulncheck.com https://www.vulncheck.com/advisories/phreebooks-remote-code-execution
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.