Vulnerability-Lookup

CNVD-2026-04541

Vulnerability from cnvd - Published: 2026-01-16

Title

Open5GS GTPv2-C拒绝服务漏洞

Description

Open5GS是开源的5G核心网软件。 Open5GS 2.7.6版本及之前版本中的GTPv2-C流处理器组件存在拒绝服务漏洞。攻击者可利用该漏洞导致服务拒绝。

Severity

低

Formal description

目前厂商尚未发布升级补丁以修复漏洞。补丁获取链接： https://github.com/open5gs/open5gs/commit/5aaa09907e7b9e0a326265a5f08d56f54280b5f2

Reference

https://github.com/open5gs/open5gs/commit/5aaa09907e7b9e0a326265a5f08d56f54280b5f2 https://github.com/open5gs/open5gs/issues/4224 https://github.com/open5gs/open5gs/issues/4224#issue-3766767406 https://github.com/open5gs/open5gs/issues/4224#issuecomment-3698521008 https://vuldb.com/?ctiid.339341 https://vuldb.com/?id.339341 https://vuldb.com/?submit.728044

Impacted products

Name
Open5GS Open5GS <=2.7.6

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-15419",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-15419"
    }
  },
  "description": "Open5GS\u662f\u5f00\u6e90\u76845G\u6838\u5fc3\u7f51\u8f6f\u4ef6\u3002\n\nOpen5GS 2.7.6\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684GTPv2-C\u6d41\u5904\u7406\u5668\u7ec4\u4ef6\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u670d\u52a1\u62d2\u7edd\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5c1a\u672a\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\u3002\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/open5gs/open5gs/commit/5aaa09907e7b9e0a326265a5f08d56f54280b5f2",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-04541",
  "openTime": "2026-01-16",
  "products": {
    "product": "Open5GS Open5GS \u003c=2.7.6"
  },
  "referenceLink": "https://github.com/open5gs/open5gs/commit/5aaa09907e7b9e0a326265a5f08d56f54280b5f2\r\nhttps://github.com/open5gs/open5gs/issues/4224\r\nhttps://github.com/open5gs/open5gs/issues/4224#issue-3766767406\r\nhttps://github.com/open5gs/open5gs/issues/4224#issuecomment-3698521008\r\nhttps://vuldb.com/?ctiid.339341\r\nhttps://vuldb.com/?id.339341\r\nhttps://vuldb.com/?submit.728044",
  "serverity": "\u4f4e",
  "submitTime": "2026-01-15",
  "title": "Open5GS GTPv2-C\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2025-15419 (GCVE-0-2025-15419)

Vulnerability from cvelistv5 – Published: 2026-01-02 00:02 – Updated: 2026-02-23 08:05 X_Open Source

Title

Open5GS GTPv2-C Flow s5c-handler.c sgwc_s5c_handle_create_session_response denial of service

Summary

A weakness has been identified in Open5GS up to 2.7.6. Affected by this issue is the function sgwc_s5c_handle_create_session_response of the file src/sgwc/s5c-handler.c of the component GTPv2-C Flow Handler. Executing a manipulation can lead to denial of service. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 5aaa09907e7b9e0a326265a5f08d56f54280b5f2. It is advisable to implement a patch to correct this issue.

Severity

4.8 (Medium)


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

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

3.3 (Low)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-02 19:03 UTC

CWE

CWE-404 - Denial of Service

Assigner

VulDB mitre root

References

8 references

URL	Tags
https://vuldb.com/?id.339341	vdb-entrytechnical-description
https://vuldb.com/?ctiid.339341	signaturepermissions-required
https://vuldb.com/?submit.728044	third-party-advisory
https://github.com/open5gs/open5gs/issues/4224	issue-tracking
https://github.com/open5gs/open5gs/issues/4224#is…	issue-tracking
https://github.com/open5gs/open5gs/issues/4224#is…	exploitissue-tracking
https://github.com/open5gs/open5gs/commit/5aaa099…	patch
https://github.com/open5gs/open5gs/	product

Impacted products

1 product

Vendor	Product	Version
n/a	Open5GS	Affected: 2.7.0 Affected: 2.7.1 Affected: 2.7.2 Affected: 2.7.3 Affected: 2.7.4 Affected: 2.7.5 Affected: 2.7.6 cpe:2.3:a:open5gs:open5gs::::::::

Credits

LinZiyu (VulDB User) LinZiyu (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-15419",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-02T19:03:31.980018Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-02T19:04:02.955Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "GTPv2-C Flow Handler"
          ],
          "product": "Open5GS",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "2.7.0"
            },
            {
              "status": "affected",
              "version": "2.7.1"
            },
            {
              "status": "affected",
              "version": "2.7.2"
            },
            {
              "status": "affected",
              "version": "2.7.3"
            },
            {
              "status": "affected",
              "version": "2.7.4"
            },
            {
              "status": "affected",
              "version": "2.7.5"
            },
            {
              "status": "affected",
              "version": "2.7.6"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "LinZiyu (VulDB User)"
        },
        {
          "lang": "en",
          "type": "analyst",
          "value": "LinZiyu (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A weakness has been identified in Open5GS up to 2.7.6. Affected by this issue is the function sgwc_s5c_handle_create_session_response of the file src/sgwc/s5c-handler.c of the component GTPv2-C Flow Handler. Executing a manipulation can lead to denial of service. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 5aaa09907e7b9e0a326265a5f08d56f54280b5f2. It is advisable to implement a patch to correct this issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
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            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
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      },
      "references": [
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          "name": "VDB-339341 | Open5GS GTPv2-C Flow s5c-handler.c sgwc_s5c_handle_create_session_response denial of service",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.339341"
        },
        {
          "name": "VDB-339341 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.339341"
        },
        {
          "name": "Submit #728044 | Open5GS SGWC v2.7.6 Denial of Service",
          "tags": [
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          "url": "https://vuldb.com/?submit.728044"
        },
        {
          "tags": [
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          "url": "https://github.com/open5gs/open5gs/issues/4224"
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          "tags": [
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          "url": "https://github.com/open5gs/open5gs/issues/4224#issuecomment-3698521008"
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          "url": "https://github.com/open5gs/open5gs/issues/4224#issue-3766767406"
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          "lang": "en",
          "time": "2026-01-01T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-01-06T16:26:21.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Open5GS GTPv2-C Flow s5c-handler.c sgwc_s5c_handle_create_session_response denial of service"
    }
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  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
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    "datePublished": "2026-01-02T00:02:08.406Z",
    "dateReserved": "2026-01-01T10:57:11.786Z",
    "dateUpdated": "2026-02-23T08:05:31.957Z",
    "state": "PUBLISHED"
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}

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.