{"id":"BIT-dotnet-2025-36855","summary":"EOL .NET 6.0 Runtime Remote Code Execution Vulnerability","details":"A vulnerability ( CVE-2025-21176 https://www.cve.org/CVERecord ) exists in DiaSymReader.dll due 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 \u003c= 6.0.36 as represented in this CVE, as well as 8.0.0 \u003c= 8.0.11 & \u003c= 9.0.0 as represented in CVE-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  targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE: This CVE affects only End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.","aliases":["BIT-dotnet-sdk-2025-36855","CVE-2025-36855"],"modified":"2026-09-18T10:10:55.454193510Z","published":"2026-09-18T08:39:46.983Z","database_specific":{"cpes":["cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"WEB","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21176"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-36855"},{"type":"WEB","url":"https://www.herodevs.com/vulnerability-directory/cve-2025-21176"}],"affected":[{"package":{"name":"dotnet","ecosystem":"Bitnami","purl":"pkg:bitnami/dotnet"},"ranges":[{"type":"SEMVER","events":[{"introduced":"6.0.0"},{"fixed":"6.0.36"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/dotnet/BIT-dotnet-2025-36855.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}],"schema_version":"1.9.0"}