{"id":"CVE-2026-47304","title":".NET Security Feature Bypass Vulnerability","summary":"Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-347","CWE-345"],"vendor":"Microsoft","product":".NET 10.0","affected":[".net_10.0 >= 10.0.0 < 10.0.10",".net_8.0 >= 8.0.0 < 8.0.29",".net_9.0 >= 9.0.0 < 9.0.18",".net_framework_3.5 >= 3.5.0 < 2.0.50727.8983 & 3.0.30729.8978",".net_framework_3.5_and_4.7.2 >= 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0",".net_framework_3.5_and_4.8 >= 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0",".net_framework_3.5_and_4.8.1 >= 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0",".net_framework_4.6.2_4.7_4.7.1_4.7.2 >= 4.7.0 < 4.7.4143.0",".net_framework_4.8 >= 4.8.0 < 4.8.4803.0",".net_framework_4.8.1 >= 4.8.0.0 < 4.8.9340.0","visual_studio_2017_version_15.9_includes_15.0_-_15.8 -","visual_studio_2019_version_16.11_includes_16.0_-_16.10 -","visual_studio_2022_version_17.12 >= 17.12.0 < 17.12.22","visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.36","visual_studio_2026_version_18.5 -","visual_studio_2026_version_18.7 >= 18.0 < 18.7.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-07-15T03:57:19.256900Z"},"published":"2026-07-14","updated":"2026-09-17","sourceUpdated":"2026-09-17T22:29:48.067Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47304","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47304","label":".NET Security Feature Bypass Vulnerability"},{"url":"https://github.com/dotnet/runtime/security/advisories/GHSA-g8r8-53c2-pm3f"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47304"},{"url":"https://github.com/dotnet/announcements/issues/412"},{"url":"https://github.com/dotnet/runtime/issues/130709"},{"url":"https://github.com/advisories/GHSA-g8r8-53c2-pm3f"}],"tags":["cve.org","ghsa","nuget"],"epss":0.00216,"epssPercentile":0.12264,"aliases":["GHSA-g8r8-53c2-pm3f"],"ecosystem":"nuget","patched":["System.Security.Cryptography.Xml 10.0.10","System.Security.Cryptography.Xml 9.0.18","System.Security.Cryptography.Xml 8.0.29"],"ingestedAt":"2026-07-20T23:44:02.849Z","slug":"CVE-2026-47304","body":"## Overview\n\nImproper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.\n\n## Affected\n\n- `.net_10.0 >= 10.0.0 < 10.0.10`\n- `.net_8.0 >= 8.0.0 < 8.0.29`\n- `.net_9.0 >= 9.0.0 < 9.0.18`\n- `.net_framework_3.5 >= 3.5.0 < 2.0.50727.8983 & 3.0.30729.8978`\n- `.net_framework_3.5_and_4.7.2 >= 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0`\n- `.net_framework_3.5_and_4.8 >= 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0`\n- `.net_framework_3.5_and_4.8.1 >= 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0`\n- `.net_framework_4.6.2_4.7_4.7.1_4.7.2 >= 4.7.0 < 4.7.4143.0`\n- `.net_framework_4.8 >= 4.8.0 < 4.8.4803.0`\n- `.net_framework_4.8.1 >= 4.8.0.0 < 4.8.9340.0`\n- `visual_studio_2017_version_15.9_includes_15.0_-_15.8 -`\n- `visual_studio_2019_version_16.11_includes_16.0_-_16.10 -`\n- `visual_studio_2022_version_17.12 >= 17.12.0 < 17.12.22`\n- `visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.36`\n- `visual_studio_2026_version_18.5 -`\n- `visual_studio_2026_version_18.7 >= 18.0 < 18.7.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-47304)\n\nAffected packages:\n\n- `System.Security.Cryptography.Xml >= 10.0.0, <= 10.0.9`\n- `System.Security.Cryptography.Xml >= 9.0.0, <= 9.0.17`\n- `System.Security.Cryptography.Xml >= 8.0.0, <= 8.0.28`\n\nPatched in:\n\n- `System.Security.Cryptography.Xml 10.0.10`\n- `System.Security.Cryptography.Xml 9.0.18`\n- `System.Security.Cryptography.Xml 8.0.29`\n\nSource: https://github.com/advisories/GHSA-g8r8-53c2-pm3f","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}