Vulnerability-Lookup

CNVD-2026-34826

Vulnerability from cnvd - Published: 2026-09-02

Title

Siemens LOGO! Soft Comfort加密问题漏洞

Description

Siemens LOGO! Soft Comfort是德国Siemens公司的一款工业控制编程软件。 Siemens LOGO! Soft Comfort存在加密问题漏洞，该漏洞源于项目密码功能将密码存储为未加盐的SHA-256哈希，攻击者可利用该漏洞导致获取项目文件，进行高效的离线字典或暴力破解攻击。

Severity

中

Patch Name

Siemens LOGO! Soft Comfort加密问题漏洞的补丁

Patch Description

Siemens LOGO! Soft Comfort是德国Siemens公司的一款工业控制编程软件。 Siemens LOGO! Soft Comfort存在加密问题漏洞，该漏洞源于项目密码功能将密码存储为未加盐的SHA-256哈希，攻击者可利用该漏洞导致获取项目文件，进行高效的离线字典或暴力破解攻击。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

用户可参考如下供应商提供的安全公告获得补丁信息： https://cert-portal.siemens.com/productcert/html/ssa-751328.html

Reference

https://cert-portal.siemens.com/productcert/html/ssa-751328.html

Impacted products

Name
Siemens LOGO! Soft Comfort <V9

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-57263"
    }
  },
  "description": "Siemens LOGO! Soft Comfort\u662f\u5fb7\u56fdSiemens\u516c\u53f8\u7684\u4e00\u6b3e\u5de5\u4e1a\u63a7\u5236\u7f16\u7a0b\u8f6f\u4ef6\u3002\n\nSiemens LOGO! Soft Comfort\u5b58\u5728\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u9879\u76ee\u5bc6\u7801\u529f\u80fd\u5c06\u5bc6\u7801\u5b58\u50a8\u4e3a\u672a\u52a0\u76d0\u7684SHA-256\u54c8\u5e0c\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u83b7\u53d6\u9879\u76ee\u6587\u4ef6\uff0c\u8fdb\u884c\u9ad8\u6548\u7684\u79bb\u7ebf\u5b57\u5178\u6216\u66b4\u529b\u7834\u89e3\u653b\u51fb\u3002",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u4f9b\u5e94\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u516c\u544a\u83b7\u5f97\u8865\u4e01\u4fe1\u606f\uff1a\r\nhttps://cert-portal.siemens.com/productcert/html/ssa-751328.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-34826",
  "openTime": "2026-09-02",
  "patchDescription": "Siemens LOGO! Soft Comfort\u662f\u5fb7\u56fdSiemens\u516c\u53f8\u7684\u4e00\u6b3e\u5de5\u4e1a\u63a7\u5236\u7f16\u7a0b\u8f6f\u4ef6\u3002\r\n\r\nSiemens LOGO! Soft Comfort\u5b58\u5728\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u9879\u76ee\u5bc6\u7801\u529f\u80fd\u5c06\u5bc6\u7801\u5b58\u50a8\u4e3a\u672a\u52a0\u76d0\u7684SHA-256\u54c8\u5e0c\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u83b7\u53d6\u9879\u76ee\u6587\u4ef6\uff0c\u8fdb\u884c\u9ad8\u6548\u7684\u79bb\u7ebf\u5b57\u5178\u6216\u66b4\u529b\u7834\u89e3\u653b\u51fb\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 LOGO! Soft Comfort\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Siemens LOGO! Soft Comfort \u003cV9"
  },
  "referenceLink": "https://cert-portal.siemens.com/productcert/html/ssa-751328.html",
  "serverity": "\u4e2d",
  "submitTime": "2026-08-26",
  "title": "Siemens LOGO! Soft Comfort\u52a0\u5bc6\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2026-57263 (GCVE-0-2026-57263)

Vulnerability from cvelistv5 – Published: 2026-08-11 12:20 – Updated: 2026-08-11 14:00

Summary

A vulnerability has been identified in LOGO! Soft Comfort (All versions < V9). The project password feature in the affected products stores the password as an unsalted SHA-256 hash. This could allow an attacker who has obtained the project file to perform efficient offline dictionary or brute-force attacks against the unsalted hash.

Severity

6.8 (Medium)


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

7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-11 13:58 UTC

CWE

CWE-759 - Use of a One-Way Hash without a Salt

Assigner

siemens icscert root

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/html/…

Impacted products

1 product

Vendor	Product	Version
Siemens	LOGO! Soft Comfort	Affected: 0 , < V9 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-57263",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-11T13:58:11.222075Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-11T14:00:28.936Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "LOGO! Soft Comfort",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "V9",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in LOGO! Soft Comfort (All versions \u003c V9). The project password feature in the affected products stores the password as an unsalted SHA-256 hash. This could allow an attacker who has obtained the project file to perform efficient offline dictionary or brute-force attacks against the unsalted hash."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.1"
          }
        },
        {
          "cvssV4_0": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-759",
              "description": "CWE-759: Use of a One-Way Hash without a Salt",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-11T12:20:22.982Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/html/ssa-751328.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2026-57263",
    "datePublished": "2026-08-11T12:20:22.982Z",
    "dateReserved": "2026-06-24T04:43:34.162Z",
    "dateUpdated": "2026-08-11T14:00:28.936Z",
    "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.

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.

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CNVD-2026-34826

CVE-2026-57263 (GCVE-0-2026-57263)

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