{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-36855", "assignerOrgId": "36c7be3b-2937-45df-85ea-ca7133ea542c", "state": "PUBLISHED", "assignerShortName": "HeroDevs", "dateReserved": "2025-04-15T23:50:31.198Z", "datePublished": "2025-09-08T13:57:28.386Z", "dateUpdated": "2025-09-08T14:06:24.393Z"}, "containers": {"cna": {"affected": [{"platforms": ["Unknown"], "product": ".NET 6.0", "vendor": "Microsoft", "versions": [{"lessThan": "6.0.36", "status": "affected", "version": "6.0.0", "versionType": "custom"}]}], "datePublic": "2025-01-14T08:00:00.000Z", "descriptions": [{"lang": "en-US", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>A vulnerability (<a target=\"_blank\" rel=\"nofollow\" href=\"https://www.cve.org/CVERecord?id=CVE-2025-21176\">CVE-2025-21176</a>) exists in <em>DiaSymReader.dll</em>&nbsp;due to buffer over-read.</p> <p>Per <a target=\"_blank\" rel=\"nofollow\" href=\"https://cwe.mitre.org/data/definitions/126.html\">CWE-126: Buffer Over-read</a>, Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.</p> <div> <div>This issue affects EOL ASP.NET 6.0.0 &lt;= 6.0.36 as represented in this CVE, as well as 8.0.0 &lt;= 8.0.11 &amp; &lt;= 9.0.0 as represented in&nbsp;CVE-2025-21176.</div> </div> <p>Additionally, if you've deployed <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd\">self-contained applications</a>&nbsp;targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.</p> <p><strong>NOTE:</strong>&nbsp;This CVE affects only <strong>End Of Life (EOL)&nbsp;</strong>software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.</p>"}], "value": "A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll\u00a0due to buffer over-read.\n\n Per CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.\n\n This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.11 & <= 9.0.0 as represented in\u00a0CVE-2025-21176.\n\n \n\n Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd \u00a0targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE:\u00a0This CVE affects only End Of Life (EOL)\u00a0software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-126", "description": "CWE-126: Buffer Over-read", "lang": "en-US", "type": "CWE"}]}], "providerMetadata": {"orgId": "36c7be3b-2937-45df-85ea-ca7133ea542c", "shortName": "HeroDevs", "dateUpdated": "2025-09-08T13:57:28.386Z"}, "references": [{"name": ".NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability", "tags": ["third-party-advisory"], "url": "https://www.herodevs.com/vulnerability-directory/cve-2025-21176"}, {"name": ".NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability", "tags": ["vendor-advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176"}], "title": "EOL .NET 6.0 Runtime Remote Code Execution Vulnerability"}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-09-08T14:06:12.291326Z", "id": "CVE-2025-36855", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-09-08T14:06:24.393Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-36855", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-09-08T14:06:12.291326Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-09-08T14:06:16.269Z"}}], "cna": {"title": "EOL .NET 6.0 Runtime Remote Code Execution Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 6.0", "versions": [{"status": "affected", "version": "6.0.0", "lessThan": "6.0.36", "versionType": "custom"}], "platforms": ["Unknown"]}], "datePublic": "2025-01-14T08:00:00.000Z", "references": [{"url": "https://www.herodevs.com/vulnerability-directory/cve-2025-21176", "name": ".NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability", "tags": ["third-party-advisory"]}, {"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176", "name": ".NET, .NET Framework, and Visual Studio Remote Code Execution Vulnerability", "tags": ["vendor-advisory"]}], "descriptions": [{"lang": "en-US", "value": "A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll\u00a0due to buffer over-read.\n\n Per CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.\n\n This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.11 & <= 9.0.0 as represented in\u00a0CVE-2025-21176.\n\n \n\n Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd \u00a0targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE:\u00a0This CVE affects only End Of Life (EOL)\u00a0software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.", "supportingMedia": [{"type": "text/html", "value": "<p>A vulnerability (<a target=\"_blank\" rel=\"nofollow\" href=\"https://www.cve.org/CVERecord?id=CVE-2025-21176\">CVE-2025-21176</a>) exists in <em>DiaSymReader.dll</em>&nbsp;due to buffer over-read.</p> <p>Per <a target=\"_blank\" rel=\"nofollow\" href=\"https://cwe.mitre.org/data/definitions/126.html\">CWE-126: Buffer Over-read</a>, Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.</p> <div> <div>This issue affects EOL ASP.NET 6.0.0 &lt;= 6.0.36 as represented in this CVE, as well as 8.0.0 &lt;= 8.0.11 &amp; &lt;= 9.0.0 as represented in&nbsp;CVE-2025-21176.</div> </div> <p>Additionally, if you've deployed <a target=\"_blank\" rel=\"nofollow\" href=\"https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd\">self-contained applications</a>&nbsp;targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.</p> <p><strong>NOTE:</strong>&nbsp;This CVE affects only <strong>End Of Life (EOL)&nbsp;</strong>software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-126", "description": "CWE-126: Buffer Over-read"}]}], "providerMetadata": {"orgId": "36c7be3b-2937-45df-85ea-ca7133ea542c", "shortName": "HeroDevs", "dateUpdated": "2025-09-08T13:57:28.386Z"}}}, "cveMetadata": {"cveId": "CVE-2025-36855", "state": "PUBLISHED", "dateUpdated": "2025-09-08T14:06:24.393Z", "dateReserved": "2025-04-15T23:50:31.198Z", "assignerOrgId": "36c7be3b-2937-45df-85ea-ca7133ea542c", "datePublished": "2025-09-08T13:57:28.386Z", "assignerShortName": "HeroDevs"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll\u00a0due to buffer over-read.\n\n Per CWE-126: Buffer Over-read https://cwe.mitre.org/data/definitions/126.html , Buffer Over-read is when a product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.\n\n This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.11 & <= 9.0.0 as represented in\u00a0CVE-2025-21176.\n\n \n\n Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd \u00a0targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE:\u00a0This CVE affects only End Of Life (EOL)\u00a0software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry."}], "id": "CVE-2025-36855", "lastModified": "2025-09-08T16:25:38.810", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "36c7be3b-2937-45df-85ea-ca7133ea542c", "type": "Secondary"}]}, "published": "2025-09-08T14:15:34.577", "references": [{"source": "36c7be3b-2937-45df-85ea-ca7133ea542c", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176"}, {"source": "36c7be3b-2937-45df-85ea-ca7133ea542c", "url": "https://www.herodevs.com/vulnerability-directory/cve-2025-21176"}], "sourceIdentifier": "36c7be3b-2937-45df-85ea-ca7133ea542c", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-126"}], "source": "36c7be3b-2937-45df-85ea-ca7133ea542c", "type": "Secondary"}]}

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