{"id":"CVE-2024-26169","published":"2024-03-12T17:15:56Z","modified":"2026-06-17T07:17:15Z","title":"Microsoft Windows Error Reporting Service Improper Privilege Management Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"Windows Error Reporting Service Elevation of Privilege Vulnerability","provenance":"source","from":"NVD"},"summary":{"text":"The Windows Error Reporting Service in Microsoft Windows contains an improper privilege management flaw that allows privilege escalation. An attacker who already has local access with low-privilege credentials, and who needs no user interaction, can exploit it to gain elevated privileges on the system.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:07:30Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.03981,"percentile":0.90462,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2024-06-13","dueDate":"2024-07-04","ransomware":true,"requiredAction":"Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26169; https://nvd.nist.gov/vuln/detail/CVE-2024-26169","provenance":"source"},"vulncheckKev":{"dateAdded":"2024-06-12","exploitedFirstSeen":"2024-06-12","ransomware":true,"evidence":[{"url":"https://symantec-enterprise-blogs.security.com/threat-intelligence/black-basta-ransomware-zero-day","date":"2024-06-12"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2024-06-13"},{"url":"https://redalert.nshc.net/2024/07/30/monthly-threat-actor-group-intelligence-report-june-2024-kor/","date":"2024-07-30"},{"url":"https://www.tenable.com/blog/cybersecurity-snapshot-data-breach-costs-rise-as-ransomware-attacks-fall","date":"2024-08-02"},{"url":"https://ti.qianxin.com/uploads/2024/08/19/2274f632f6a1d8acd2f1801c24887edb.pdf","date":"2024-08-19"},{"url":"https://www.ptsecurity.com/ru-ru/research/analytics/aktualnye-kiberugrozy-ii-kvartal-2024-goda/","date":"2024-08-22"},{"url":"https://redalert.nshc.net/2024/08/27/monthly-threat-actor-group-intelligence-report-june-2024-eng/","date":"2024-08-27"},{"url":"https://blog.qualys.com/vulnerabilities-threat-research/2024/09/19/black-basta-ransomware-what-you-need-to-know","date":"2024-09-19"},{"url":"https://redalert.nshc.net/2024/09/19/monthly-threat-actor-group-intelligence-report-june-2024-jpn/","date":"2024-09-19"},{"url":"https://medium.com/s2wblog/ransomware-landscape-in-h1-2024-statistics-and-key-issues-b7502d9f4068","date":"2024-10-11"}],"evidenceTotal":14,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-269","name":"Improper Privilege Management"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26169","tags":["Patch","Vendor Advisory"]},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-26169","tags":["Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-26169","tags":["US Government Resource"]}],"techniques":[{"id":"T1112","name":"Modify Registry","tactics":["defense-impairment","persistence"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Improper Privilege Management","mappingType":"exploitation_technique","evidence":[],"comment":"This vulnerability is a zero-day exploit that \"manipulates the Windows file werkernel.sys, which uses a null security descriptor when creating registry keys. Attackers create a registry key HKLM\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Image File Execution Options\\WerFault.exe and set the \"Debugger\" value to the exploit's executable pathname. This allows the exploit to start a shell with administrative privileges.\" This vulnerability has been exploited by the Black Basta ransomware group.","confidence":"high"},{"id":"T1203","name":"Exploitation for Client Execution","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Improper Privilege Management","mappingType":"exploitation_technique","evidence":[],"comment":"This vulnerability is a zero-day exploit that \"manipulates the Windows file werkernel.sys, which uses a null security descriptor when creating registry keys. Attackers create a registry key HKLM\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Image File Execution Options\\WerFault.exe and set the \"Debugger\" value to the exploit's executable pathname. This allows the exploit to start a shell with administrative privileges.\" This vulnerability has been exploited by the Black Basta ransomware group.","confidence":"high"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"source","basis":"ctid-kev","bases":["ctid-kev"],"basisDetail":"CTID Mappings Explorer KEV 07/28/2025 (ATT&CK 16.1); capability: Improper Privilege Management","mappingType":"primary_impact","evidence":[],"comment":"This vulnerability is a zero-day exploit that \"manipulates the Windows file werkernel.sys, which uses a null security descriptor when creating registry keys. Attackers create a registry key HKLM\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Image File Execution Options\\WerFault.exe and set the \"Debugger\" value to the exploit's executable pathname. This allows the exploit to start a shell with administrative privileges.\" This vulnerability has been exploited by the Black Basta ransomware group.","confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2024-23445","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-23445","exploited":true,"exploitedSince":"2024-06-13","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1203","T1112"],"provenance":"source"},{"stage":"primary","techniques":["T1059"],"provenance":"source"}],"timeline":[{"date":"2024-03-12","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26169","provenance":"source"},{"date":"2024-06-12","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://symantec-enterprise-blogs.security.com/threat-intelligence/black-basta-ransomware-zero-day","provenance":"source"},{"date":"2024-06-13","kind":"kev","label":"Added to CISA KEV (known ransomware use)","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2024-06-13","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-23445","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":93},"priority":{"score":71.6,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 870 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":18.09,"detail":"percentile 0.9046"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-microsoft-windows-cwe-269"}}