Vulnerability-Lookup

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

Vulnerability from cvelistv5 – Published: 2026-04-30 16:08 – Updated: 2026-07-15 01:24 X_Known Exploited Vulnerability

Shadowserver Previdian

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 · CISA-ADP (v2.0.3)

Decision recorded 2026-04-30 18:24 UTC

CWE

CWE-434 - Unrestricted Upload of File with Dangerous Type

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7011 records in the last 180 days details

References

4 references

URL	Tags
https://service.e-office.cn/knowledge/detail/5	release-notespatch
https://cn-sec.com/archives/1453025.html	technical-descriptionexploit
https://bbs.chaitin.cn/topic/37	technical-descriptionexploit
https://www.vulncheck.com/advisories/weaver-e-off…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Weaver Network Co., Ltd.	E-office	Affected: 0 , < 10.0_20221201 (custom) cpe:2.3:a:weaver:e-office::::::::

Date Public

2022-12-01 00:00

Credits

The Shadowserver Foundation

Shadowserver

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: 2ad2e93e-c224-45d0-99f8-275257fa12fe

Vulnerability ID: CVE-2022-50993

Status: Confirmed

Status Updated: 2026-10-25 00:00 UTC

Exploited: Yes

Characteristics

Severity: 98.0

Timestamps

First Seen: 2026-05-15

Asserted: 2026-05-15

Last Seen: 2026-10-25

Scope

Asset Exposure: ['internet-facing']

Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details

1D	1
Iot	no
Feed	Shadowserver Foundation honeypot/exploited-vulnerabilities
Type	http-scan
Class	other-software
7D Avg	0
Vendor	Weaver
30D Avg	0
90D Avg	0
Product	Weaver E-Office
Cisa Kev	no
Connections	13
Observation Date	2026-10-25
Vulnerability Class	CVSS
Vulnerability Score	9.8
Vulnerability Severity	Critical

References

Created: 2026-07-01 05:54 UTC | Updated: 2026-10-27 01:01 UTC

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: e3193ac3-1ee6-47e9-a439-8338de9827b3

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

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details

Feed	Previdian (previdian.com)
Title	Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet
Cve Id	CVE-2022-50993
Vendor	Weaver Network
Ghsa Id	None
Product	E-office
Added Date	2026-04-30T16:08:46.000Z
Cvss Score	9.3
Epss Score	0.00774
Previous Ids
Cvss Severity	CRITICAL
Virtual Patch	False
Cvss Estimated	False
Epss Percentile	0.53596
Used In Malware	unknown
Vulnerability Id	CVE-2022-50993
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

Created: 2026-09-10 08:23 UTC | Updated: 2026-09-10 08:23 UTC

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2022-50993

Vulnerability from fkie_nvd - Published: 2026-04-30 17:16 - Updated: 2026-06-17 05:24

Shadowserver Previdian

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://bbs.chaitin.cn/topic/37
	disclosure@vulncheck.com	https://cn-sec.com/archives/1453025.html
	disclosure@vulncheck.com	https://service.e-office.cn/knowledge/detail/5
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/weaver-e-office-10-0-20221201-unauthenticated-arbitrary-file-read-via-xmlrpcservlet

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
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          "defaultStatus": "affected",
          "product": "E-office",
          "vendor": "Weaver Network Co., Ltd.",
          "versions": [
            {
              "lessThan": "10.0_20221201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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)."
    }
  ],
  "id": "CVE-2022-50993",
  "lastModified": "2026-06-17T05:24:33.737",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-50993",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-30T18:24:00.203973Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-30T17:16:24.800",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://bbs.chaitin.cn/topic/37"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://cn-sec.com/archives/1453025.html"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://service.e-office.cn/knowledge/detail/5"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/weaver-e-office-10-0-20221201-unauthenticated-arbitrary-file-read-via-xmlrpcservlet"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-434"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-G99J-CQ2Q-3XRV

Vulnerability from github – Published: 2026-04-30 18:30 – Updated: 2026-04-30 18:30

Details

Severity

9.8 (Critical)


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

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2022-50993"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-30T17:16:24Z",
    "severity": "CRITICAL"
  },
  "details": "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).",
  "id": "GHSA-g99j-cq2q-3xrv",
  "modified": "2026-04-30T18:30:32Z",
  "published": "2026-04-30T18:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50993"
    },
    {
      "type": "WEB",
      "url": "https://bbs.chaitin.cn/topic/37"
    },
    {
      "type": "WEB",
      "url": "https://cn-sec.com/archives/1453025.html"
    },
    {
      "type": "WEB",
      "url": "https://service.e-office.cn/knowledge/detail/5"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/weaver-e-office-10-0-20221201-unauthenticated-arbitrary-file-read-via-xmlrpcservlet"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/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",
      "type": "CVSS_V4"
    }
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

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

Shadowserver

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Characteristics

Timestamps

Scope

Evidence

Honeypot In The Wild Attempts Confidence: 70% Source: shadowserver

Details

References

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: previdian

Details

References

FKIE_CVE-2022-50993

GHSA-G99J-CQ2Q-3XRV

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Sightings

Nomenclature

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Related by attack behaviour