{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-111732",
        "assignerOrgId": "4b71179a-3b92-4a9d-b9fc-af8b8ed579ee",
        "state": "PUBLISHED",
        "assignerShortName": "rt-labs",
        "dateReserved": "2026-10-16T15:49:47.302Z",
        "datePublished": "2026-10-29T15:40:00.541Z",
        "dateUpdated": "2026-10-29T15:40:00.541Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "4b71179a-3b92-4a9d-b9fc-af8b8ed579ee",
                "shortName": "rt-labs",
                "dateUpdated": "2026-10-29T15:40:00.541Z"
            },
            "title": "Out-of-bounds write when parsing AR Vendor Block requests",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-787",
                            "description": "CWE-787 Out-of-bounds Write",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "RT-Labs",
                    "product": "P-Net",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "1.0.3",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "P-Net before 1.0.3, when built with PNET_OPTION_AR_VENDOR_BLOCKS enabled, parses a data length from a field of the ARVendorBlock request that is not part of the block definition and uses it as the number of bytes to copy into a fixed-size buffer, without comparing it with the buffer size or the block length. A crafted Connect request causes an out-of-bounds write. This can lead to a crash (denial of service) or potentially arbitrary code execution.\n\n\n\nThis option is disabled by default.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p>P-Net before 1.0.3, when built with PNET_OPTION_AR_VENDOR_BLOCKS enabled, parses a data length from a field of the ARVendorBlock request that is not part of the block definition and uses it as the number of bytes to copy into a fixed-size buffer, without comparing it with the buffer size or the block length. A crafted Connect request causes an out-of-bounds write. This can lead to a crash (denial of service) or potentially arbitrary code execution.</p><p>This option is disabled by default.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://rt-labs.com/wp-content/uploads/2026/10/RRTL-261019-01.pdf",
                    "name": "Cybersecurity advisory for P-Net"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.3,
                        "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"
                    }
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "Upgrade to P-Net 1.0.3 or later.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p>Upgrade to P-Net 1.0.3 or later.</p>"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "f0rw4rd (quellsec.dev)",
                    "type": "finder"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            }
        }
    }
}