{"id":"CVE-2026-32203","title":".NET and Visual Studio Denial of Service Vulnerability","summary":"Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-121","CWE-20","CWE-787"],"vendor":"Microsoft","product":".NET 10.0","affected":[".net_10.0 >= 10.0.0 < 10.0.6",".net_8.0 >= 8.0.0 < 8.0.26",".net_9.0 >= 9.0.0 < 9.0.15","visual_studio_2022_version_17.12 >= 17.12.0 < 17.12.19","visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.30","visual_studio_2026_version_18.4 >= 18.4.0 < 18.4.4"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-04-15T10:41:37.792331Z"},"published":"2026-04-14","updated":"2026-10-15","sourceUpdated":"2026-10-15T15:53:38.631Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-32203","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32203","label":".NET and Visual Studio Denial of Service Vulnerability"},{"url":"https://github.com/dotnet/runtime/security/advisories/GHSA-6588-8gv4-xfgh"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32203"},{"url":"https://github.com/dotnet/runtime/issues/126891"},{"url":"https://github.com/dotnet/announcements/issues/391"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32203.json"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2457740"},{"url":"https://access.redhat.com/security/cve/CVE-2026-32203"},{"url":"https://access.redhat.com/errata/RHSA-2026:9205"},{"url":"https://access.redhat.com/errata/RHSA-2026:9080"},{"url":"https://access.redhat.com/errata/RHSA-2026:9077"},{"url":"https://access.redhat.com/errata/RHSA-2026:8475"},{"url":"https://access.redhat.com/errata/RHSA-2026:8474"},{"url":"https://access.redhat.com/errata/RHSA-2026:8473"},{"url":"https://access.redhat.com/errata/RHSA-2026:8472"},{"url":"https://access.redhat.com/errata/RHSA-2026:8471"},{"url":"https://access.redhat.com/errata/RHSA-2026:8470"},{"url":"https://access.redhat.com/errata/RHSA-2026:8469"},{"url":"https://access.redhat.com/errata/RHSA-2026:8468"},{"url":"https://access.redhat.com/errata/RHSA-2026:8467"},{"url":"https://access.redhat.com/errata/RHSA-2026:13693"},{"url":"https://access.redhat.com/errata/RHSA-2026:13283"},{"url":"https://access.redhat.com/errata/RHSA-2026:13282"},{"url":"https://access.redhat.com/errata/RHSA-2026:13281"},{"url":"https://access.redhat.com/errata/RHSA-2026:13280"},{"url":"https://github.com/advisories/GHSA-6588-8gv4-xfgh"}],"tags":["cve.org","ghsa","nuget"],"epss":0.01895,"epssPercentile":0.79509,"aliases":["GHSA-6588-8gv4-xfgh"],"ecosystem":"nuget","patched":["System.Security.Cryptography.Xml 10.0.6","System.Security.Cryptography.Xml 9.0.15","System.Security.Cryptography.Xml 8.0.3"],"ingestedAt":"2026-07-28T21:39:18.343Z","slug":"CVE-2026-32203","body":"## Overview\n\nStack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.\n\n## Affected\n\n- `.net_10.0 >= 10.0.0 < 10.0.6`\n- `.net_8.0 >= 8.0.0 < 8.0.26`\n- `.net_9.0 >= 9.0.0 < 9.0.15`\n- `visual_studio_2022_version_17.12 >= 17.12.0 < 17.12.19`\n- `visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.30`\n- `visual_studio_2026_version_18.4 >= 18.4.0 < 18.4.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-32203)\n\nAffected packages:\n\n- `System.Security.Cryptography.Xml >= 10.0.0, <= 10.0.5`\n- `System.Security.Cryptography.Xml >= 9.0.0, <= 9.0.14`\n- `System.Security.Cryptography.Xml >= 8.0.0, <= 8.0.2`\n\nPatched in:\n\n- `System.Security.Cryptography.Xml 10.0.6`\n- `System.Security.Cryptography.Xml 9.0.15`\n- `System.Security.Cryptography.Xml 8.0.3`\n\nSource: https://github.com/advisories/GHSA-6588-8gv4-xfgh","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.4,"exploitation":0,"ransomware":0},"changes":[]}