Vulnerability-Lookup

GHSA-JC56-MHH5-666M

Vulnerability from github – Published: 2026-09-01 09:31 – Updated: 2026-09-01 09:31

Details

A service running on the affected products contains a potential Time-of-Check Time-of-Use (TOCTOU) race condition. An unauthenticated remote attacker could exploit this race condition to bypass intended security controls. This may result in the execution of unauthorized code.

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-78319"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-01T07:16:36Z",
    "severity": "CRITICAL"
  },
  "details": "A service running on the affected products contains a potential Time-of-Check Time-of-Use (TOCTOU) race condition.\nAn unauthenticated remote attacker could exploit this race condition to bypass intended security controls.\nThis may result in the execution of unauthorized code.",
  "id": "GHSA-jc56-mhh5-666m",
  "modified": "2026-09-01T09:31:19Z",
  "published": "2026-09-01T09:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78319"
    },
    {
      "type": "WEB",
      "url": "https://sauter.csaf-tp.certvde.com/.well-known/csaf/white/2026/vde-2026-093.json"
    },
    {
      "type": "WEB",
      "url": "https://www.certvde.com/en/advisories/VDE-2026-093"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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"
    }
  ]
}

CVE-2026-78319 (GCVE-0-2026-78319)

Vulnerability from cvelistv5 – Published: 2026-09-01 06:44 – Updated: 2026-09-01 17:36

Title

TOCTOU Vulnerability in file exchange

Summary

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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-01 17:36 UTC

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

CERTVDE icscert root

References

2 references

URL	Tags
https://www.certvde.com/en/advisories/VDE-2026-093/
https://sauter.csaf-tp.certvde.com/.well-known/cs…

Impacted products

5 products

Vendor	Product	Version
Sauter	modu680-AS	Affected: 1.0.0 , < 4.0.0 (semver)
Sauter	modu660-AS	Affected: 1.0.0 , < 4.0.0 (semver)
Sauter	modu612-LC	Affected: 1.0.0 , < 4.0.0 (semver)
Sauter	ecos504	Affected: 1.0.0 , < 7.0.0 (semver)
Sauter	ecos505	Affected: 1.0.0 , < 7.0.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-78319",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-01T17:36:35.720120Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-01T17:36:45.357Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "modu680-AS",
          "vendor": "Sauter",
          "versions": [
            {
              "lessThan": "4.0.0",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "modu660-AS",
          "vendor": "Sauter",
          "versions": [
            {
              "lessThan": "4.0.0",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "modu612-LC",
          "vendor": "Sauter",
          "versions": [
            {
              "lessThan": "4.0.0",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "ecos504",
          "vendor": "Sauter",
          "versions": [
            {
              "lessThan": "7.0.0",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "ecos505",
          "vendor": "Sauter",
          "versions": [
            {
              "lessThan": "7.0.0",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:h:sauter:modu680_as:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.0.0",
                  "versionStartIncluding": "1.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:h:sauter:modu660_as:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.0.0",
                  "versionStartIncluding": "1.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:h:sauter:modu612_lc:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.0.0",
                  "versionStartIncluding": "1.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:h:sauter:ecos504:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.0",
                  "versionStartIncluding": "1.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:h:sauter:ecos505:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.0",
                  "versionStartIncluding": "1.0.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eA service running on the affected products contains a potential Time-of-Check Time-of-Use (TOCTOU) race condition.\nAn unauthenticated remote attacker could exploit this race condition to bypass intended security controls.\nThis may result in the execution of unauthorized code.\u003c/p\u003e"
            }
          ],
          "value": "A service running on the affected products contains a potential Time-of-Check Time-of-Use (TOCTOU) race condition.\nAn unauthenticated remote attacker could exploit this race condition to bypass intended security controls.\nThis may result in the execution of unauthorized code."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-367",
              "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-01T06:45:23.493Z",
        "orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
        "shortName": "CERTVDE"
      },
      "references": [
        {
          "url": "https://www.certvde.com/en/advisories/VDE-2026-093/"
        },
        {
          "url": "https://sauter.csaf-tp.certvde.com/.well-known/csaf/white/2026/vde-2026-093.json"
        }
      ],
      "source": {
        "advisory": "VDE-2026-093",
        "defect": [
          "CERT@VDE#642209"
        ],
        "discovery": "UNKNOWN"
      },
      "title": "TOCTOU Vulnerability in file exchange",
      "x_generator": {
        "engine": "Vulnogram 0.4.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
    "assignerShortName": "CERTVDE",
    "cveId": "CVE-2026-78319",
    "datePublished": "2026-09-01T06:44:51.429Z",
    "dateReserved": "2026-08-24T08:38:06.052Z",
    "dateUpdated": "2026-09-01T17:36:45.357Z",
    "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.

Action not permitted

GHSA-JC56-MHH5-666M

CVE-2026-78319 (GCVE-0-2026-78319)

Tags

Sightings

Nomenclature