Vulnerability-Lookup

CNVD-2021-67537

Vulnerability from cnvd - Published: 2021-09-02

Title

Siemens SmartVNC堆分配泄露漏洞

Description

Siemens SmartVNC是德国西门子（Siemens）公司的一个工控设备。提供一个访问HMI中的smartserver功能。 Siemens SmartVNC在客户端设备布局处理程序中存在堆分配泄露漏洞，攻击者可利用漏洞导致拒绝服务情况。

Severity

中

Patch Name

Siemens SmartVNC堆分配泄露漏洞的补丁

Patch Description

Siemens SmartVNC是德国西门子（Siemens）公司的一个工控设备。提供一个访问HMI中的smartserver功能。 Siemens SmartVNC在客户端设备布局处理程序中存在堆分配泄露漏洞，攻击者可利用漏洞导致拒绝服务情况。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://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf

Impacted products

Name
['Siemens SINAMICS SL150', 'Siemens SINAMICS SM150', 'Siemens SINAMICS SM150i', 'Siemens SINAMICS GH150', 'Siemens SINAMICS GL150 (with option X30)', 'Siemens SINAMICS GM150 (with option X30)', 'Siemens SINAMICS SH150', 'Siemens SINAMICS SM120']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27386",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-27386"
    }
  },
  "description": "Siemens SmartVNC\u662f\u5fb7\u56fd\u897f\u95e8\u5b50\uff08Siemens\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5de5\u63a7\u8bbe\u5907\u3002\u63d0\u4f9b\u4e00\u4e2a\u8bbf\u95eeHMI\u4e2d\u7684smartserver\u529f\u80fd\u3002\n\nSiemens SmartVNC\u5728\u5ba2\u6237\u7aef\u8bbe\u5907\u5e03\u5c40\u5904\u7406\u7a0b\u5e8f\u4e2d\u5b58\u5728\u5806\u5206\u914d\u6cc4\u9732\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\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://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-67537",
  "openTime": "2021-09-02",
  "patchDescription": "Siemens SmartVNC\u662f\u5fb7\u56fd\u897f\u95e8\u5b50\uff08Siemens\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5de5\u63a7\u8bbe\u5907\u3002\u63d0\u4f9b\u4e00\u4e2a\u8bbf\u95eeHMI\u4e2d\u7684smartserver\u529f\u80fd\u3002\r\n\r\nSiemens SmartVNC\u5728\u5ba2\u6237\u7aef\u8bbe\u5907\u5e03\u5c40\u5904\u7406\u7a0b\u5e8f\u4e2d\u5b58\u5728\u5806\u5206\u914d\u6cc4\u9732\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\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": "Siemens SmartVNC\u5806\u5206\u914d\u6cc4\u9732\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Siemens SINAMICS SL150",
      "Siemens SINAMICS SM150",
      "Siemens SINAMICS SM150i",
      "Siemens SINAMICS GH150",
      "Siemens SINAMICS GL150 (with option X30)",
      "Siemens SINAMICS GM150 (with option X30)",
      "Siemens SINAMICS SH150",
      "Siemens SINAMICS SM120"
    ]
  },
  "referenceLink": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-12",
  "title": "Siemens SmartVNC\u5806\u5206\u914d\u6cc4\u9732\u6f0f\u6d1e"
}

CVE-2021-27386 (GCVE-0-2021-27386)

Vulnerability from cvelistv5 – Published: 2021-05-12 13:18 – Updated: 2026-06-02 19:06

Summary

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). SmartVNC has a heap allocation leak vulnerability in the device layout handler on client side, which could result in a Denial-of-Service condition.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-02 19:06 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

siemens icscert root Scorecard

References

3 references

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_MISC
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12	x_refsource_MISC

Impacted products

16 products

Vendor	Product	Version
Siemens	SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants)	Affected: All versions < V15.1 Update 6
Siemens	SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants)	Affected: All versions < V16 Update 4
Siemens	SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants)	Affected: All versions < V15.1 Update 6
Siemens	SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants)	Affected: All versions < V16 Update 4
Siemens	SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F	Affected: All versions < V15.1 Update 6
Siemens	SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F	Affected: All versions < V16 Update 4
Siemens	SIMATIC WinCC Runtime Advanced V15	Affected: All versions < V15.1 Update 6
Siemens	SIMATIC WinCC Runtime Advanced V16	Affected: All versions < V16 Update 4
Siemens	SINAMICS GH150	Affected: All versions
Siemens	SINAMICS GL150 (with option X30)	Affected: All versions
Siemens	SINAMICS GM150 (with option X30)	Affected: All versions
Siemens	SINAMICS SH150	Affected: All versions
Siemens	SINAMICS SL150	Affected: All versions
Siemens	SINAMICS SM120	Affected: All versions
Siemens	SINAMICS SM150	Affected: All versions
Siemens	SINAMICS SM150i	Affected: All versions

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:48:16.446Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
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          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-27386",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-02T19:06:43.362472Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-02T19:06:47.812Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V15.1 Update 6"
            }
          ]
        },
        {
          "product": "SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V16 Update 4"
            }
          ]
        },
        {
          "product": "SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V15.1 Update 6"
            }
          ]
        },
        {
          "product": "SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V16 Update 4"
            }
          ]
        },
        {
          "product": "SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V15.1 Update 6"
            }
          ]
        },
        {
          "product": "SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V16 Update 4"
            }
          ]
        },
        {
          "product": "SIMATIC WinCC Runtime Advanced V15",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V15.1 Update 6"
            }
          ]
        },
        {
          "product": "SIMATIC WinCC Runtime Advanced V16",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V16 Update 4"
            }
          ]
        },
        {
          "product": "SINAMICS GH150",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "SINAMICS GL150 (with option X30)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "SINAMICS GM150 (with option X30)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "SINAMICS SH150",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "SINAMICS SL150",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "SINAMICS SM120",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "SINAMICS SM150",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "SINAMICS SM150i",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        }
      ],
      "descriptions": [
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          "value": "A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions \u003c V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions \u003c V16 Update 4), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). SmartVNC has a heap allocation leak vulnerability in the device layout handler on client side, which could result in a Denial-of-Service condition."
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-401",
              "description": "CWE-401: Missing Release of Memory after Effective Lifetime",
              "lang": "en",
              "type": "CWE"
            }
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        }
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      "providerMetadata": {
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        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
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            "x_refsource_MISC"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
        },
        {
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            "x_refsource_MISC"
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          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "productcert@siemens.com",
          "ID": "CVE-2021-27386",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V15.1 Update 6"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V16 Update 4"
                          }
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                      }
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                    {
                      "product_name": "SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V15.1 Update 6"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V16 Update 4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V15.1 Update 6"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V16 Update 4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SIMATIC WinCC Runtime Advanced V15",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V15.1 Update 6"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SIMATIC WinCC Runtime Advanced V16",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V16 Update 4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS GH150",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS GL150 (with option X30)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS GM150 (with option X30)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS SH150",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS SL150",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS SM120",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS SM150",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "SINAMICS SM150i",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Siemens"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\\\" \u0026 15\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI Comfort Panels V15 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\\\" - 22\\\" (incl. SIPLUS variants) (All versions \u003c V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions \u003c V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions \u003c V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions \u003c V16 Update 4), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). SmartVNC has a heap allocation leak vulnerability in the device layout handler on client side, which could result in a Denial-of-Service condition."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-401: Missing Release of Memory after Effective Lifetime"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf",
              "refsource": "MISC",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf",
              "refsource": "MISC",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"
            },
            {
              "name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12",
              "refsource": "MISC",
              "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf",
              "refsource": "CONFIRM",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf",
              "refsource": "CONFIRM",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-286838.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2021-27386",
    "datePublished": "2021-05-12T13:18:23.000Z",
    "dateReserved": "2021-02-18T00:00:00.000Z",
    "dateUpdated": "2026-06-02T19:06:47.812Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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

CNVD-2021-67537

CVE-2021-27386 (GCVE-0-2021-27386)

Tags

Sightings

Nomenclature

Related by attack behaviour