{"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 runtime","affected":[".net_10.0_runtime >= 10.0.0 < 10.0.10",".net_8.0_runtime >= 8.0.0 < 8.0.29",".net_9.0_runtime >= 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":"2026-10-28","sourceUpdated":"2026-10-28T20:02:29.104Z","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://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-47304.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-47304"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2500509"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-47304"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47304"},{"url":"https://access.redhat.com/errata/RHSA-2026:58566"},{"url":"https://access.redhat.com/errata/RHSA-2026:58567"},{"url":"https://access.redhat.com/errata/RHSA-2026:41897"},{"url":"https://access.redhat.com/errata/RHSA-2026:41893"},{"url":"https://access.redhat.com/errata/RHSA-2026:41895"},{"url":"https://access.redhat.com/errata/RHSA-2026:41900"},{"url":"https://access.redhat.com/errata/RHSA-2026:41901"},{"url":"https://access.redhat.com/errata/RHSA-2026:41899"},{"url":"https://access.redhat.com/errata/RHSA-2026:58568"},{"url":"https://access.redhat.com/errata/RHSA-2026:58569"},{"url":"https://access.redhat.com/errata/RHSA-2026:58570"},{"url":"https://access.redhat.com/errata/RHSA-2026:41898"},{"url":"https://access.redhat.com/errata/RHSA-2026:41894"},{"url":"https://access.redhat.com/errata/RHSA-2026:41896"},{"url":"https://access.redhat.com/errata/RHSA-2026:42145"},{"url":"https://access.redhat.com/errata/RHSA-2026:39952"},{"url":"https://github.com/dotnet/runtime/security/advisories/GHSA-g8r8-53c2-pm3f"},{"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","csaf","vex","red-hat","ghsa","nuget"],"epss":0.00286,"epssPercentile":0.21087,"aliases":["GHSA-g8r8-53c2-pm3f"],"ecosystem":"nuget","patched":["enterprise_linux_appstream_eus_v_10_0","enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_e4s_v_9_4","enterprise_linux_appstream_eus_v_9_6","enterprise_linux_appstream_v_9","enterprise_linux_codeready_linux_builder_eus_v_10_0","enterprise_linux_codeready_linux_builder_v_10","enterprise_linux_crb_v_8","codeready_linux_builder_eus_v_9_6","enterprise_linux_codeready_linux_builder_v_9","hardened_images"],"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_runtime >= 10.0.0 < 10.0.10`\n- `.net_8.0_runtime >= 8.0.0 < 8.0.29`\n- `.net_9.0_runtime >= 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\n\n## Vendor advisories\n\n- **RHSA-2026:58566** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58566)\n- **RHSA-2026:58567** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58567)\n- **RHSA-2026:41897** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:41897)\n- **RHSA-2026:41893** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:41893)\n- **RHSA-2026:41895** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:41895)\n- **RHSA-2026:41900** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:41900)\n- **RHSA-2026:41901** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:41901)\n- **RHSA-2026:41899** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:41899)\n- **RHSA-2026:58568** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58568)\n- **RHSA-2026:58569** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat CodeReady Linux Builder EUS (v.9.6) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58569)\n- **RHSA-2026:58570** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat CodeReady Linux Builder EUS (v.9.6) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58570)","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}