{"id":"CVE-2026-84008","title":"Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.","summary":"Inefficient algorithmic complexity in .NET 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","cwe":["CWE-407"],"vendor":"System","product":"System.Security.Cryptography.Pkcs","affected":["System.Security.Cryptography.Pkcs >= 10.0.0, <= 10.0.12","System.Security.Cryptography.Pkcs >= 11.0.0-preview.1, <= 11.0.0-rc.1","System.Security.Cryptography.Pkcs >= 8.0.0, <= 8.0.1","System.Security.Cryptography.Pkcs >= 9.0.0, <= 9.0.20"],"patched":["System.Security.Cryptography.Pkcs 10.0.13","System.Security.Cryptography.Pkcs 11.0.0-rc.2","System.Security.Cryptography.Pkcs 8.0.2","System.Security.Cryptography.Pkcs 9.0.21"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T23:18:40.710","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84008","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84008","label":"secure@microsoft.com"},{"url":"https://github.com/dotnet/runtime/security/advisories/GHSA-846f-f764-76mx"},{"url":"https://github.com/dotnet/announcements/issues/468"},{"url":"https://github.com/dotnet/runtime/issues/135703"},{"url":"https://github.com/advisories/GHSA-846f-f764-76mx"}],"tags":["nvd","ghsa","nuget"],"aliases":["GHSA-846f-f764-76mx"],"ecosystem":"nuget","ingestedAt":"2026-10-13T19:43:29.146Z","slug":"CVE-2026-84008","body":"## Overview\n\nInefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-84008)\n\nAffected packages:\n\n- `System.Security.Cryptography.Pkcs >= 10.0.0, <= 10.0.12`\n- `System.Security.Cryptography.Pkcs >= 11.0.0-preview.1, <= 11.0.0-rc.1`\n- `System.Security.Cryptography.Pkcs >= 8.0.0, <= 8.0.1`\n- `System.Security.Cryptography.Pkcs >= 9.0.0, <= 9.0.20`\n\nPatched in:\n\n- `System.Security.Cryptography.Pkcs 10.0.13`\n- `System.Security.Cryptography.Pkcs 11.0.0-rc.2`\n- `System.Security.Cryptography.Pkcs 8.0.2`\n- `System.Security.Cryptography.Pkcs 9.0.21`\n\nSource: https://github.com/advisories/GHSA-846f-f764-76mx","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}