Description
Weaver (Fanwei) E-office versions prior to 10.0_20221201 contain an unauthenticated arbitrary file upload vulnerability in the OfficeServer.php endpoint that allows remote attackers to upload malicious files by sending multipart POST requests with arbitrary filenames and disguised content types. Attackers can upload PHP webshells to the Document directory and execute them via HTTP GET requests to achieve remote code execution as the web server user. Exploitation evidence was first observed by the Shadowserver Foundation on 2022-10-10 (UTC).
Published: 2026-04-30
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 01 May 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Weaver
Weaver e-office
Vendors & Products Weaver
Weaver e-office

Thu, 30 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 30 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Description Weaver (Fanwei) E-office versions prior to 10.0_20221201 contain an unauthenticated arbitrary file upload vulnerability in the OfficeServer.php endpoint that allows remote attackers to upload malicious files by sending multipart POST requests with arbitrary filenames and disguised content types. Attackers can upload PHP webshells to the Document directory and execute them via HTTP GET requests to achieve remote code execution as the web server user. Exploitation evidence was first observed by the Shadowserver Foundation on 2022-10-10 (UTC).
Title Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-14T02:07:00.943Z

Reserved: 2026-04-29T18:22:05.872Z

Link: CVE-2022-50993

cve-icon Vulnrichment

Updated: 2026-04-30T18:24:07.804Z

cve-icon NVD

Status : Deferred

Published: 2026-04-30T17:16:24.800

Modified: 2026-04-30T17:19:57.853

Link: CVE-2022-50993

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-01T08:21:16Z

Weaknesses