CVE-2022-50993 (GCVE-0-2022-50993)

Vulnerability from cvelistv5 – Published: 2026-04-30 16:08 – Updated: 2026-05-14 02:07 X_Known Exploited Vulnerability
VLAI KEVIntel
Title
Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet
Summary
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).
Severity
9.3 (Critical)
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
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
Impacted products
Vendor Product Version
Weaver Network Co., Ltd. E-office Affected: 0 , < 10.0_20221201 (custom)
Create a notification for this product.
Date Public
2022-12-01 00:00
Credits
The Shadowserver Foundation
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b69a4d51-7576-48bd-acb0-fbd1fe6e3dfb

Vulnerability ID: CVE-2022-50993

Status: Confirmed

Status Updated: 2026-04-30 16:08 UTC

Exploited: Yes

Timestamps
First Seen: 2026-04-30
Asserted: 2026-04-30
Scope
Notes: KEVIntel entry: Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet | Affected: Weaver Network Co., Ltd. / E-office | CVSS: 9.3 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet
Vendor Weaver Network Co., Ltd.
Product E-office
Added Date 2026-04-30T16:08:46.000Z
Cvss Score 9.3
Epss Score None
Cvss Severity CRITICAL
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-06-23 14:03 UTC
Show details on NVD website
To clipboard 

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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.