{"id":"CVE-2026-96957","title":"Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.","summary":"Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-347"],"published":"2026-10-13","updated":"2026-10-14","sourceUpdated":"2026-10-14T04:19:04.480","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-96957","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96957","label":"secure@microsoft.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-96957.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-96957"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2548813"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-96957"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96957"},{"url":"https://access.redhat.com/errata/RHSA-2026:86195"},{"url":"https://access.redhat.com/errata/RHSA-2026:86192"},{"url":"https://access.redhat.com/errata/RHSA-2026:86193"},{"url":"https://access.redhat.com/errata/RHSA-2026:84491"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-13T19:43:29.286Z","vendor":"Microsoft","product":".NET 10.0","affected":[".net_10.0 >= 10.0.0 < 10.0.402",".net_11.0 >= 11.0.0 < 11.0.100-rc.2","visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.42","visual_studio_2026_version_18.10 >= 18.10.0 < 18.10.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-08T00:00:00+00:00"},"epss":0.00534,"epssPercentile":0.45215,"patched":["enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_v_9","enterprise_linux_codeready_linux_builder_v_10","enterprise_linux_crb_v_8","enterprise_linux_codeready_linux_builder_v_9","hardened_images"],"slug":"CVE-2026-96957","body":"## Overview\n\nImproper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:86195** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86195)\n- **RHSA-2026:86192** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86192)\n- **RHSA-2026:86193** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) · released 2026-10-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:86193)\n- **RHSA-2026:84491** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:84491)","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}