Vulnerability-Lookup

CNVD-2026-21381

Vulnerability from cnvd - Published: 2026-05-22

Title

free5GC存在未明漏洞

Description

free5GC是free5GC开源的一个第5代(5G) 移动核心网络的开源项目。 free5GC存在安全漏洞，该漏洞源于处理无效pduSessionId输入时可靠地泄露详细内部错误消息，攻击者可利用该漏洞导致获取实现细节并用于服务指纹识别。

Severity

高

Patch Name

free5GC存在未明漏洞的补丁

Patch Description

free5GC是free5GC开源的一个第5代(5G) 移动核心网络的开源项目。 free5GC存在安全漏洞，该漏洞源于处理无效pduSessionId输入时可靠地泄露详细内部错误消息，攻击者可利用该漏洞导致获取实现细节并用于服务指纹识别。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/free5gc/udm/releases

Reference

https://github.com/free5gc/free5gc/issues/750

Impacted products

Name
free5GC free5GC <=1.4.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-69250",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-69250"
    }
  },
  "description": "free5GC\u662ffree5GC\u5f00\u6e90\u7684\u4e00\u4e2a\u7b2c5\u4ee3(5G) \u79fb\u52a8\u6838\u5fc3\u7f51\u7edc\u7684\u5f00\u6e90\u9879\u76ee\u3002\n\nfree5GC\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5904\u7406\u65e0\u6548pduSessionId\u8f93\u5165\u65f6\u53ef\u9760\u5730\u6cc4\u9732\u8be6\u7ec6\u5185\u90e8\u9519\u8bef\u6d88\u606f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u83b7\u53d6\u5b9e\u73b0\u7ec6\u8282\u5e76\u7528\u4e8e\u670d\u52a1\u6307\u7eb9\u8bc6\u522b\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/free5gc/udm/releases",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-21381",
  "openTime": "2026-05-22",
  "patchDescription": "free5GC\u662ffree5GC\u5f00\u6e90\u7684\u4e00\u4e2a\u7b2c5\u4ee3(5G) \u79fb\u52a8\u6838\u5fc3\u7f51\u7edc\u7684\u5f00\u6e90\u9879\u76ee\u3002\r\n\r\nfree5GC\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5904\u7406\u65e0\u6548pduSessionId\u8f93\u5165\u65f6\u53ef\u9760\u5730\u6cc4\u9732\u8be6\u7ec6\u5185\u90e8\u9519\u8bef\u6d88\u606f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u83b7\u53d6\u5b9e\u73b0\u7ec6\u8282\u5e76\u7528\u4e8e\u670d\u52a1\u6307\u7eb9\u8bc6\u522b\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "free5GC\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "free5GC free5GC \u003c=1.4.1"
  },
  "referenceLink": "https://github.com/free5gc/free5gc/issues/750",
  "serverity": "\u9ad8",
  "submitTime": "2026-03-09",
  "title": "free5GC\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2025-69250 (GCVE-0-2025-69250)

Vulnerability from cvelistv5 – Published: 2026-02-23 23:45 – Updated: 2026-02-25 16:15

Title

free5GC has Improper Error Handling in UDM, Leading to Information Exposure

Summary

free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the service reliably leaks detailed internal error messages (e.g., strconv.ParseInt parsing errors) to remote clients when processing invalid pduSessionId inputs. This exposes implementation details and can be used for service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM DELETE service may be vulnerable. free5gc/udm pull request 76 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended.

Severity

6.6 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-25 16:14 UTC

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions
CWE-20 - Improper Input Validation

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/free5gc/free5gc/security/advis…	x_refsource_CONFIRM
https://github.com/free5gc/free5gc/issues/750	x_refsource_MISC
https://github.com/free5gc/udm/pull/76	x_refsource_MISC
https://github.com/free5gc/udm/commit/504b14458d1…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
free5gc	udm	Affected: <= 1.4.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-69250",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-25T16:14:56.659704Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-25T16:15:24.603Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "udm",
          "vendor": "free5gc",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.4.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the service reliably leaks detailed internal error messages (e.g., strconv.ParseInt parsing errors) to remote clients when processing invalid pduSessionId inputs. This exposes implementation details and can be used for service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM DELETE service may be vulnerable. free5gc/udm pull request 76 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-754",
              "description": "CWE-754: Improper Check for Unusual or Exceptional Conditions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-23T23:51:24.107Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/free5gc/free5gc/security/advisories/GHSA-6w77-5pqh-83rm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-6w77-5pqh-83rm"
        },
        {
          "name": "https://github.com/free5gc/free5gc/issues/750",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/free5gc/free5gc/issues/750"
        },
        {
          "name": "https://github.com/free5gc/udm/pull/76",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/free5gc/udm/pull/76"
        },
        {
          "name": "https://github.com/free5gc/udm/commit/504b14458d156558b3c0ade7107b86b3d5e72998",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/free5gc/udm/commit/504b14458d156558b3c0ade7107b86b3d5e72998"
        }
      ],
      "source": {
        "advisory": "GHSA-6w77-5pqh-83rm",
        "discovery": "UNKNOWN"
      },
      "title": "free5GC has Improper Error Handling in UDM, Leading to Information Exposure"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-69250",
    "datePublished": "2026-02-23T23:45:02.681Z",
    "dateReserved": "2025-12-30T14:07:18.370Z",
    "dateUpdated": "2026-02-25T16:15:24.603Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.