CVE-2021-47904 - CVE House
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Status published High CVE-2021-47904

PhreeBooks 5.2.3 - Remote Code Execution

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Kr0ff

References

More from Phreesoft

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CVE-2019-25647
PhreeBooks ERP 5.2.3 Remote Code Execution via Image Manager
High 8.7
CVE-2019-25630
PhreeBooks ERP 5.2.3 Arbitrary File Upload via Image Manager
High 8.7

Affected Vendor

Affected Software

PhreeBooks
Vulnerable Versions:
5.2.3

Timeline

Official Publish: January 23rd, 2026
Last Modified: April 7th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-434

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1505.003 Web Shell
Persistence
T1105 Ingress Tool Transfer
Command and Control
T1059 Command and Scripting Interpreter
Execution
T1565.002 Stored Data Manipulation
Impact