CVE-2023-2523

HIGH EXPLOITED

Weaver E-Office 9.5 - Unrestricted Upload of File with Dangerous Type via upload_quwan Parameter

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2023-2523 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 3 public exploits from researchers including Any3ite, werwolfz.

AI-analyzed exploit summary This Go-based exploit targets CVE-2023-2523 in Weaver E-Office9 by uploading a malicious PHP file via a vulnerable endpoint (`/E-mobile/App/Ajax/ajax.php?action=mobile_upload_save`). It achieves RCE by embedding a PHP eval payload and triggering it via a crafted HTTP request.

Description

A vulnerability was found in Weaver E-Office 9.5. It has been rated as critical. Affected by this issue is some unknown functionality of the file App/Ajax/ajax.php?action=mobile_upload_save. The manipulation of the argument upload_quwan leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-228014 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Exploits (3)

nomisec WORKING POC 1 stars
by Any3ite · remote
https://github.com/Any3ite/CVE-2023-2523

This Go-based exploit targets CVE-2023-2523 in Weaver E-Office9 by uploading a malicious PHP file via a vulnerable endpoint (`/E-mobile/App/Ajax/ajax.php?action=mobile_upload_save`). It achieves RCE by embedding a PHP eval payload and triggering it via a crafted HTTP request.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Weaver E-Office9
No auth needed
Prerequisites: Network access to the target server · Vulnerable E-Office9 instance
devstral-2 · analyzed Feb 18, 2026 Full analysis →
nomisec WORKING POC
by werwolfz · poc
https://github.com/werwolfz/cve-2023-2523-and-cve-2023-2648

The repository contains functional exploit code for CVE-2023-2523 and CVE-2023-2648, demonstrating file upload vulnerabilities in E-mobile and uploadify.php respectively. The scripts upload PHP files with embedded PHP code (e.g., phpinfo()) to achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: E-mobile (CVE-2023-2523), uploadify.php (CVE-2023-2648)
No auth needed
Prerequisites: Network access to the target application
devstral-2 · analyzed Feb 18, 2026 Full analysis →
vulncheck_xdb WORKING POC
remote
https://github.com/zhaoyumi/WeaverExploit_All

This repository contains a functional exploit for CVE-2023-2523, targeting a file upload vulnerability in Weaver E-Mobile. The PoC demonstrates arbitrary file upload via a multipart form request to '/E-mobile/App/Ajax/ajax.php?action=mobile_upload_save'.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Weaver E-Mobile
No auth needed
Prerequisites: network access to target · vulnerable Weaver E-Mobile instance
devstral-2 · analyzed May 17, 2026 Full analysis →

References (3)

Core 3
Core References
Permissions Required, Third Party Advisory vdb-entry technical-description
https://vuldb.com/?id.228014
Permissions Required, Third Party Advisory signature permissions-required
https://vuldb.com/?ctiid.228014

Scores

CVSS v3 7.3
EPSS 0.3290
EPSS Percentile 98.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Details

VulnCheck KEV 2026-05-13
CWE
CWE-434
Status published
Products (1)
e-office/e-office 9.5
Published May 04, 2023
Tracked Since Feb 18, 2026