Vulnerability-Lookup

CVE-2023-54398 (GCVE-0-2023-54398)

Vulnerability from cvelistv5 – Published: 2026-09-15 16:43 – Updated: 2026-09-15 17:30 X_Known Exploited Vulnerability

Previdian

Title

Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet

Summary

Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.

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 2026-09-15 17:30 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

VulnCheck mitre root

References

6 references

URL	Tags
https://security.yonyou.com/#/noticeInfo?id=400	vendor-advisorypatch
https://cn-sec.com/archives/2182384.html	technical-descriptionexploit
https://blog.csdn.net/qq_41904294/article/details…	technical-descriptionexploit
https://avd.aliyun.com/detail?id=AVD-2023-1686894	third-party-advisory
https://www.yonyou.com/Global/	product
https://www.vulncheck.com/advisories/yonyou-u8-cl…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Yonyou	U8 Cloud	Affected: 1.0 (custom) Affected: 2.0 (custom) Affected: 2.1 (custom) Affected: 2.3 (custom) Affected: 2.5 (custom) Affected: 2.6 (custom) Affected: 2.65 (custom) Affected: 2.7 (custom) Affected: 3.0 (custom) Affected: 3.1 (custom) Affected: 3.2 (custom) Affected: 3.5 (custom) Affected: 3.6 (custom) Affected: 3.6sp (custom)	guessed

Date Public

2023-10-17 00:00

Credits

The Shadowserver Foundation

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

KEV entry ID: a3b2ec9b-106d-45f9-bf04-8503f9fd297d

Vulnerability ID: CVE-2023-54398

Status: Confirmed

Status Updated: 2026-09-15 17:00 UTC

Exploited: Yes

Timestamps

First Seen: 2026-09-15

Asserted: 2026-09-15

Scope

Notes: Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet | Affected: Yonyou / U8 Cloud | CVSS: 9.3 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: True

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details

Feed	Previdian (previdian.com)
Title	Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet
Cve Id	CVE-2023-54398
Vendor	Yonyou
Ghsa Id	GHSA-R89P-QRRF-VPMC
Product	U8 Cloud
Added Date	2026-09-15T17:00:52.437Z
Cvss Score	9.3
Epss Score	None
Previous Ids
Cvss Severity	CRITICAL
Virtual Patch	False
Cvss Estimated	False
Epss Percentile	None
Used In Malware	unknown
Vulnerability Id	CVE-2023-54398
Ahead Of Cisa Kev	None
Not Yet In Cisa Kev	True

References

Created: 2026-09-16 18:00 UTC | Updated: 2026-09-16 18:00 UTC

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2023-54398

Vulnerability from fkie_nvd - Published: 2026-09-15 17:17 - Updated: 2026-09-15 18:17

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://avd.aliyun.com/detail?id=AVD-2023-1686894
	disclosure@vulncheck.com	https://blog.csdn.net/qq_41904294/article/details/134277353
	disclosure@vulncheck.com	https://cn-sec.com/archives/2182384.html
	disclosure@vulncheck.com	https://security.yonyou.com/#/noticeInfo?id=400
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/yonyou-u8-cloud-java-deserialization-rce-via-filemanageservlet
	disclosure@vulncheck.com	https://www.yonyou.com/Global/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "U8 Cloud",
          "vendor": "Yonyou",
          "versions": [
            {
              "status": "affected",
              "version": "1.0",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.0",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.1",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.3",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.5",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.6",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.65",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.7",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.0",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.1",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.2",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.5",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.6",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.6sp",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13."
    }
  ],
  "id": "CVE-2023-54398",
  "lastModified": "2026-09-15T18:17:10.417",
  "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-2023-54398",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-15T17:30:16.079872Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-15T17:17:08.343",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://avd.aliyun.com/detail?id=AVD-2023-1686894"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://blog.csdn.net/qq_41904294/article/details/134277353"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://cn-sec.com/archives/2182384.html"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://security.yonyou.com/#/noticeInfo?id=400"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/yonyou-u8-cloud-java-deserialization-rce-via-filemanageservlet"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.yonyou.com/Global/"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-R89P-QRRF-VPMC

Vulnerability from github – Published: 2026-09-15 18:32 – Updated: 2026-09-15 18:32

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-2023-54398"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-15T17:17:08Z",
    "severity": "CRITICAL"
  },
  "details": "Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.",
  "id": "GHSA-r89p-qrrf-vpmc",
  "modified": "2026-09-15T18:32:32Z",
  "published": "2026-09-15T18:32:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54398"
    },
    {
      "type": "WEB",
      "url": "https://avd.aliyun.com/detail?id=AVD-2023-1686894"
    },
    {
      "type": "WEB",
      "url": "https://blog.csdn.net/qq_41904294/article/details/134277353"
    },
    {
      "type": "WEB",
      "url": "https://cn-sec.com/archives/2182384.html"
    },
    {
      "type": "WEB",
      "url": "https://security.yonyou.com/#/noticeInfo?id=400"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/yonyou-u8-cloud-java-deserialization-rce-via-filemanageservlet"
    },
    {
      "type": "WEB",
      "url": "https://www.yonyou.com/Global"
    }
  ],
  "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.

Detection rules are retrieved from Rulezet.

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-2023-54398 (GCVE-0-2023-54398)

Previdian

Known Exploited Vulnerability - GCVE BCP-07 Compliant

Timestamps

Scope

Evidence

Public Report Successful Exploitation Confidence: 70% Source: previdian

Details

References

FKIE_CVE-2023-54398

GHSA-R89P-QRRF-VPMC

Tags

Sightings

Nomenclature

Related by attack behaviour