{"api_version":"1","generated_at":"2026-07-23T15:03:42+00:00","cve":"CVE-2026-55144","urls":{"html":"https://cve.report/CVE-2026-55144","api":"https://cve.report/api/cve/CVE-2026-55144.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-55144","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-55144"},"summary":{"title":"Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability","description":"Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.","state":"PUBLISHED","assigner":"microsoft","published_at":"2026-07-14 17:17:09","updated_at":"2026-07-21 05:16:34"},"problem_types":["CWE-325","CWE-325 CWE-325: Missing Cryptographic Step"],"metrics":[{"version":"3.1","source":"secure@microsoft.com","type":"Secondary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","data":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","version":"3.1"}}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55144","name":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55144","refsource":"secure@microsoft.com","tags":["Patch","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-55144","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55144","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Microsoft","product":"Windows 11 Version 24H2","version":"affected 10.0.26100.0 10.0.26100.8875 custom","platforms":["ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows 11 Version 25H2","version":"affected 10.0.26200.0 10.0.26200.8875 custom","platforms":["ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows 11 version 26H1","version":"affected 10.0.28000.0 10.0.28000.2525 custom","platforms":["ARM64-based Systems","x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2022","version":"affected 10.0.20348.0 10.0.20348.5386 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2025","version":"affected 10.0.26100.0 10.0.26100.33158 custom","platforms":["x64-based Systems"]},{"source":"CNA","vendor":"Microsoft","product":"Windows Server 2025 (Server Core installation)","version":"affected 10.0.26100.0 10.0.26100.33158 custom","platforms":["x64-based Systems"]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_11_24h2","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"arm64","cpe13":"*"},{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_11_24h2","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"x64","cpe13":"*"},{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_11_25h2","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"arm64","cpe13":"*"},{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_11_25h2","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"x64","cpe13":"*"},{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_11_26h1","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"arm64","cpe13":"*"},{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_11_26h1","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"x64","cpe13":"*"},{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_server_2022","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"55144","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows_server_2025","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"55144","cve":"CVE-2026-55144","epss":"0.001640000","percentile":"0.060480000","score_date":"2026-07-21","updated_at":"2026-07-22 00:11:18"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-55144","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-07-20T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-07-21T03:56:16.175Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 24H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.8875","status":"affected","version":"10.0.26100.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 Version 25H2","vendor":"Microsoft","versions":[{"lessThan":"10.0.26200.8875","status":"affected","version":"10.0.26200.0","versionType":"custom"}]},{"platforms":["ARM64-based Systems","x64-based Systems"],"product":"Windows 11 version 26H1","vendor":"Microsoft","versions":[{"lessThan":"10.0.28000.2525","status":"affected","version":"10.0.28000.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2022","vendor":"Microsoft","versions":[{"lessThan":"10.0.20348.5386","status":"affected","version":"10.0.20348.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2025","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.33158","status":"affected","version":"10.0.26100.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Windows Server 2025 (Server Core installation)","vendor":"Microsoft","versions":[{"lessThan":"10.0.26100.33158","status":"affected","version":"10.0.26100.0","versionType":"custom"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.20348.5386","versionStartIncluding":"10.0.20348.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.26100.33158","versionStartIncluding":"10.0.26100.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26200.8875","versionStartIncluding":"10.0.26200.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26100.8875","versionStartIncluding":"10.0.26100.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.26100.33158","versionStartIncluding":"10.0.26100.0","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.28000.2525","versionStartIncluding":"10.0.28000.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"datePublic":"2026-07-14T14:00:00.000Z","descriptions":[{"lang":"en-US","value":"Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally."}],"metrics":[{"cvssV3_1":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-325","description":"CWE-325: Missing Cryptographic Step","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-20T23:08:37.522Z","orgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","shortName":"microsoft"},"references":[{"name":"Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55144"}],"title":"Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability"}},"cveMetadata":{"assignerOrgId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","assignerShortName":"microsoft","cveId":"CVE-2026-55144","datePublished":"2026-07-14T17:05:06.598Z","dateReserved":"2026-06-16T15:03:49.682Z","dateUpdated":"2026-07-21T03:56:16.175Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-14 17:17:09","lastModifiedDate":"2026-07-21 05:16:34","problem_types":["CWE-325","CWE-325 CWE-325: Missing Cryptographic Step"],"metrics":{"cvssMetricV31":[{"source":"secure@microsoft.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.8,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-20T00:00:00+00:00","id":"CVE-2026-55144","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26100.8875","matchCriteriaId":"6D55C01A-5908-4CFC-BEB6-BBF3B6F0C5AF"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.26100.8875","matchCriteriaId":"740B730D-AEC5-4735-A122-B1CF8B3C364C"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.26200.8875","matchCriteriaId":"E26E96B6-1469-46AE-9CB5-AB7A0372C398"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.26200.8875","matchCriteriaId":"DDBCA9E4-7BFB-423A-B7A7-9CBF5625053D"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*","versionEndExcluding":"10.0.28000.2525","matchCriteriaId":"8E90830B-0BD1-4D01-9C7D-0F0E1828A0F5"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*","versionEndExcluding":"10.0.28000.2525","matchCriteriaId":"D335CB65-70DC-4DB1-9519-AF9243EC2FDF"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.20348.5386","matchCriteriaId":"9E9A0C18-3AD2-4E59-97AF-A2343E466929"},{"vulnerable":true,"criteria":"cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*","versionEndExcluding":"10.0.26100.33158","matchCriteriaId":"22BE2FE9-37B9-4FF2-B43A-60A3518E0F08"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"55144","Ordinal":"1","Title":"Windows Cryptography API: Next Generation (CNG) Tampering Vulner","CVE":"CVE-2026-55144","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"55144","Ordinal":"1","NoteData":"Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.","Type":"Description","Title":"Windows Cryptography API: Next Generation (CNG) Tampering Vulner"}]}}}