Vulnerability-Lookup

CVE-2026-15105 (GCVE-0-2026-15105)

Vulnerability from cvelistv5 – Published: 2026-07-08 22:15 – Updated: 2026-08-01 14:56

Title

davenardella snap7 ReadVar Request s7_server.cpp PerformFunctionRead out-of-bounds write

Summary

A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes out-of-bounds write. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Severity

5.3 (Medium)


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

6.3 (Medium)


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

6.3 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-09 13:18 UTC

CWE

CWE-787 - Out-of-bounds Write
CWE-119 - Memory Corruption

Assigner

VulDB

References

7 references

URL	Tags
https://vuldb.com/vuln/376946	vdb-entrytechnical-description
https://vuldb.com/vuln/376946/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-15105	third-party-advisory
https://vuldb.com/submit/851026	third-party-advisory
https://github.com/davenardella/snap7/issues/16	issue-tracking
https://github.com/user-attachments/files/2868174…	exploit
https://github.com/davenardella/snap7/	product

Impacted products

1 product

Vendor	Product	Version
davenardella	snap7	Affected: 1.4.0 Affected: 1.4.1 Affected: 1.4.2 Affected: 1.4.3 cpe:2.3:a:davenardella:snap7::::::::

Credits

Chuan Wei VULL (VulDB User) VULL (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-15105

Vulnerability from fkie_nvd - Published: 2026-07-08 23:16 - Updated: 2026-07-09 16:20

Severity

6.3 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Summary

A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes deserialization. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

References

	URL	Tags
	cna@vuldb.com	https://github.com/davenardella/snap7/
	cna@vuldb.com	https://github.com/davenardella/snap7/issues/16
	cna@vuldb.com	https://github.com/user-attachments/files/28681740/poc.zip
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-15105
	cna@vuldb.com	https://vuldb.com/submit/851026
	cna@vuldb.com	https://vuldb.com/vuln/376946
	cna@vuldb.com	https://vuldb.com/vuln/376946/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "lastModified": "2026-07-09T16:20:12.533",
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          "version": "2.0"
        },
        "exploitabilityScore": 6.5,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "ADJACENT",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.1,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-15105",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-09T13:18:08.587007Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-08T23:16:51.600",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/davenardella/snap7/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/davenardella/snap7/issues/16"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/user-attachments/files/28681740/poc.zip"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-15105"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/851026"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/376946"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/376946/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-X9CG-5M94-27CV

Vulnerability from github – Published: 2026-07-09 00:31 – Updated: 2026-07-09 00:31

Details

A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes deserialization. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Severity

6.3 (Medium)


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

2.1 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-15105"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-08T23:16:51Z",
    "severity": "LOW"
  },
  "details": "A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes deserialization. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "GHSA-x9cg-5m94-27cv",
  "modified": "2026-07-09T00:31:17Z",
  "published": "2026-07-09T00:31:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15105"
    },
    {
      "type": "WEB",
      "url": "https://github.com/davenardella/snap7/issues/16"
    },
    {
      "type": "WEB",
      "url": "https://github.com/davenardella/snap7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/28681740/poc.zip"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-15105"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/851026"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/376946"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/376946/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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"
    }
  ]
}

ubuntu-cve-2026-15105

Vulnerability from osv_ubuntu

Published

2026-07-08 23:16

Modified

2026-08-06 00:12

Summary

Details

Severity

6.3 (Medium)


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

2.1 (Low)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-15105	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-15105	REPORT
	https://github.com/davenardella/snap7/	REPORT
	https://github.com/davenardella/snap7/issues/16	REPORT
	https://github.com/user-attachments/files/2868174…	REPORT
	https://vuldb.com/cve/CVE-2026-15105	REPORT
	https://vuldb.com/submit/851026	REPORT
	https://vuldb.com/vuln/376946	REPORT
	https://vuldb.com/vuln/376946/cti	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libsnap7-1",
            "binary_version": "1.4.2+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "snap7",
        "purl": "pkg:deb/ubuntu/snap7@1.4.2+dfsg-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.2+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libsnap7-1",
            "binary_version": "1.4.2+dfsg-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "snap7",
        "purl": "pkg:deb/ubuntu/snap7@1.4.2+dfsg-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.2+dfsg-1",
        "1.4.2+dfsg-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes out-of-bounds write. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "UBUNTU-CVE-2026-15105",
  "modified": "2026-08-06T00:12:17Z",
  "published": "2026-07-08T23:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-15105"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-15105"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/davenardella/snap7/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/davenardella/snap7/issues/16"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/user-attachments/files/28681740/poc.zip"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/cve/CVE-2026-15105"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/submit/851026"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/376946"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/376946/cti"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-15105"
  ]
}

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

CVE-2026-15105 (GCVE-0-2026-15105)

FKIE_CVE-2026-15105

GHSA-X9CG-5M94-27CV

ubuntu-cve-2026-15105

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature