[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ff2RWPd8RBfO0mYBQmKy8L2yMdQ6J2zBIum_OoePxQlo":3},{"article":4,"iocs":55,"watch_terms":60,"solutions":61,"lesson":152},{"id":5,"title":6,"slug":7,"summary":8,"ai_summary":9,"brief":10,"url":11,"image_url":12,"published_at":13,"ingested_at":14,"relevance_score":15,"entities":16,"category_id":32,"category":33,"article_tags":37},"b97c6da9-934b-4153-a5e7-c1f62016a07d","CISA Confirms Active Exploitation of Outlook User Interaction 0-Day Vulnerability","cisa-confirms-active-exploitation-of-outlook-user-interaction-0-day-vulnerabilit-204fc2","The U.S. Cybersecurity and Infrastructure Security Agency has confirmed active exploitation of a Microsoft Outlook zero-day vulnerability CVE-2026-124194 that can expose user authentication data. According to Microsoft’s security advisory, an attacker can send a specially crafted message file and persuade a victim to open it in Outlook. The application may then connect to an attacker-controlled […] The post CISA Confirms Active Exploitation of Outlook User Interaction 0-Day Vulnerability appeared first on Cyber Security News.","CISA has confirmed active exploitation of a Microsoft Outlook zero-day vulnerability, CVE-2026-124194, which can expose user authentication data. Attackers can trick victims into opening a crafted message file, causing Outlook to connect to an attacker-controlled location and disclose the user's NTLMv2 hash. Microsoft has released security updates for affected versions, and CISA has added it to its Known Exploited Vulnerabilities catalog with a remediation deadline.","CISA confirms active exploitation of a Microsoft Outlook zero-day vulnerability.","https:\u002F\u002Fcybersecuritynews.com\u002Factive-exploitation-of-outlook-0-day-vulnerability\u002F","https:\u002F\u002Fcybersecuritynews.com\u002Fwp-content\u002Fuploads\u002F2026\u002F11\u002FCISA-Confirms-Active-Exploitation-of-Outlook-User-Interaction-0-Day-Vulnerability-1.webp","2026-11-12T14:11:54+00:00","2026-11-12T15:00:27.571501+00:00",9,[17,20,23,25,27,29],{"name":18,"type":19},"Microsoft Outlook","product",{"name":21,"type":22},"Microsoft","vendor",{"name":24,"type":19},"Microsoft 365 Apps for Enterprise",{"name":26,"type":19},"Office LTSC 2021",{"name":28,"type":19},"Office LTSC 2024",{"name":30,"type":31},"Russian hackers","threat_actor","80544778-fabb-4dcd-aa35-17492e5dcf4f",{"id":32,"icon":34,"name":35,"slug":36},null,"Vulnerabilities","vulnerabilities",[38,43,48,50],{"category":39},{"id":40,"icon":34,"name":41,"slug":42},"574f766a-fb3f-487c-8d2c-0720ae75471b","Zero-day","zero-day",{"category":44},{"id":45,"icon":34,"name":46,"slug":47},"6cbdd207-aaa1-4176-9534-e156b125e917","Nation-state","nation-state",{"category":49},{"id":32,"icon":34,"name":35,"slug":36},{"category":51},{"id":52,"icon":34,"name":53,"slug":54},"e7b231c8-5f79-4465-8d38-1ef13aea5a14","Threat Intelligence","threat-intelligence",[56],{"type":57,"value":58,"context":59},"cve","CVE-2026-124194","Microsoft Outlook zero-day vulnerability",[21,18,24],{"controls":62,"vendors":148},[63,92,120],{"slug":64,"name":65,"problem":66,"products":67},"identity-threat-detection","Identity threat detection and response (ITDR)","Attackers who log in with real, stolen credentials get noticed.",[68,76,84],{"vendor_slug":69,"vendor_name":70,"vendor_logo":71,"product_slug":72,"product_name":73,"url":74,"description":75},"crowdstrike","CrowdStrike","\u002Fvendor-logos\u002Fcrowdstrike.png","falcon-identity-protection","Falcon Identity Protection","https:\u002F\u002Fwww.crowdstrike.com\u002Fen-us\u002Fplatform\u002Fnext-gen-identity-security\u002Fidentity-protection\u002F","Detection of identity attacks against Active Directory and Entra ID, with risk-based MFA.",{"vendor_slug":77,"vendor_name":78,"vendor_logo":79,"product_slug":80,"product_name":81,"url":82,"description":83},"vectra-ai","Vectra AI","\u002Fvendor-logos\u002Fvectra-ai.png","vectra-ai-platform","Vectra AI Platform","https:\u002F\u002Fwww.vectra.ai\u002Fplatform","Detection of attacker behaviour across network, identity and cloud.",{"vendor_slug":85,"vendor_name":86,"vendor_logo":87,"product_slug":88,"product_name":89,"url":90,"description":91},"acalvio","Acalvio","\u002Fvendor-logos\u002Facalvio.png","shadowplex-identity-protection","ShadowPlex Identity Protection","https:\u002F\u002Fwww.acalvio.com\u002Fproducts\u002Fidentity-protection\u002F","Decoy accounts and credentials that expose identity attacks and credential misuse early.",{"slug":93,"name":94,"problem":95,"products":96},"patch-management","Automated patch management","Known holes get closed in days, not months.",[97,105,112],{"vendor_slug":98,"vendor_name":99,"vendor_logo":100,"product_slug":101,"product_name":102,"url":103,"description":104},"manageengine","ManageEngine","\u002Fvendor-logos\u002Fmanageengine.png","patch-manager-plus","ManageEngine Patch Manager Plus","https:\u002F\u002Fwww.manageengine.com\u002Fpatch-management\u002F","Patch management for operating systems and third-party applications, on premises or in the cloud.",{"vendor_slug":106,"vendor_name":107,"vendor_logo":108,"product_slug":93,"product_name":109,"url":110,"description":111},"qualys","Qualys","\u002Fvendor-logos\u002Fqualys.png","Qualys Patch Management","https:\u002F\u002Fwww.qualys.com\u002Fapps\u002Fpatch-management\u002F","Patch deployment for operating systems and third-party applications, linked to vulnerability findings.",{"vendor_slug":113,"vendor_name":114,"vendor_logo":115,"product_slug":116,"product_name":117,"url":118,"description":119},"ivanti","Ivanti","\u002Fvendor-logos\u002Fivanti.png","neurons-patch-management","Ivanti Neurons for Patch Management","https:\u002F\u002Fwww.ivanti.com\u002Fproducts\u002Fivanti-neurons-for-patch-management","Risk-based patch management for operating systems and third-party applications.",{"slug":121,"name":122,"problem":123,"products":124},"email-security","Email security","Phishing, malware and invoice fraud are filtered out before they reach inboxes.",[125,133,140],{"vendor_slug":126,"vendor_name":127,"vendor_logo":128,"product_slug":129,"product_name":130,"url":131,"description":132},"mimecast","Mimecast","\u002Fvendor-logos\u002Fmimecast.png","mimecast-email-security","Mimecast Email Security","https:\u002F\u002Fwww.mimecast.com\u002Fproducts\u002Femail-security\u002F","Email filtering, impersonation protection and continuity.",{"vendor_slug":134,"vendor_name":21,"vendor_logo":135,"product_slug":136,"product_name":137,"url":138,"description":139},"microsoft","\u002Fvendor-logos\u002Fmicrosoft.png","defender-for-office-365","Microsoft Defender for Office 365","https:\u002F\u002Fwww.microsoft.com\u002Fen-us\u002Fsecurity\u002Fbusiness\u002Fsiem-and-xdr\u002Fmicrosoft-defender-office-365","Protection for Exchange Online, Teams and SharePoint against phishing, malicious links and attachments.",{"vendor_slug":141,"vendor_name":142,"vendor_logo":143,"product_slug":144,"product_name":145,"url":146,"description":147},"check-point","Check Point","\u002Fvendor-logos\u002Fcheck-point.png","harmony-email","Harmony Email & Collaboration","https:\u002F\u002Fwww.checkpoint.com\u002Fharmony\u002Femail-security\u002F","Email and collaboration security for Microsoft 365 and Google Workspace.",[149],{"slug":134,"name":21,"logo_path":135,"roles":150},[151],"affected",{"slug":153,"title":154,"body":155,"framework_refs":156,"framework_notes":162},"outlook-zero-day-exploited-to-steal-ntlm-credentials-via-crafted-messages","Outlook Zero-Day Exploited to Steal NTLM Credentials via Crafted Messages","A zero-day vulnerability in Microsoft Outlook (CVE-2026-124194) is being actively exploited in the wild, allowing attackers to steal NTLMv2 authentication hashes simply by tricking a user into opening a specially crafted message file. The stolen hash can be used in pass-the-hash or relay attacks, potentially granting attackers unauthorized access to internal systems without ever cracking a password. This vulnerability is particularly dangerous because it requires minimal user interaction and leverages a trusted application users open daily. Microsoft has released patches, but organizations that delay deployment remain exposed, especially since CISA has confirmed real-world exploitation. This incident underscores the compounding risk of unpatched software combined with users who cannot recognize suspicious message files.",[157,158,159,160,161],"CIS Control 7: Continuous Vulnerability Management (v8)","NIST SP 800-53 SI-2: Flaw Remediation","NIST CSF 2.0 RS.MI-02: Incident Mitigation","MITRE ATT&CK T1187: Forced Authentication","NIS2 Article 21(2)(e)",{"NIS2 Article 21(2)(e)":163,"NIST SP 800-53 SI-2: Flaw Remediation":164,"MITRE ATT&CK T1187: Forced Authentication":165,"NIST CSF 2.0 RS.MI-02: Incident Mitigation":166,"CIS Control 7: Continuous Vulnerability Management (v8)":167},"This point requires security in acquisition, development, and maintenance including vulnerability handling, meaning in-scope organizations must have processes to rapidly address disclosed and exploited vulnerabilities like this Outlook zero-day.","SI-2 mandates identifying, reporting, and correcting software flaws within defined timeframes, directly covering the obligation to patch this actively exploited Outlook vulnerability.","This technique describes exactly what this exploit achieves — forcing the victim's Outlook client to authenticate to an attacker-controlled server and expose the NTLMv2 hash.","This category requires organizations to mitigate the effects of detected incidents, which includes applying vendor patches and blocking NTLM exfiltration paths once active exploitation is confirmed.","CIS Control 7 requires organizations to continuously assess and remediate vulnerabilities; applying the Outlook patch promptly would have closed the attack vector before exploitation occurred."]