{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-42832/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.7,"id":"CVE-2026-42832"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Office"],"_cs_severities":["medium"],"_cs_tags":["cve-2026-42832","spoofing","microsoft-office","access-control"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eCVE-2026-42832 is an improper access control vulnerability affecting Microsoft Office. An attacker could exploit this vulnerability to perform spoofing actions locally. The vulnerability exists due to a flaw in how Microsoft Office handles access controls, allowing an unauthorized user to potentially impersonate or misrepresent themselves within the application. This could lead to users being tricked into performing actions they wouldn\u0026rsquo;t normally, such as providing credentials or opening malicious documents. The scope of the vulnerability is limited to local exploitation, meaning the attacker needs to have some level of access to the affected system.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains local access to a system with vulnerable Microsoft Office.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious Office document or uses an existing one.\u003c/li\u003e\n\u003cli\u003eThe malicious document leverages the improper access control vulnerability.\u003c/li\u003e\n\u003cli\u003eThe user opens the malicious document locally in Microsoft Office.\u003c/li\u003e\n\u003cli\u003eThe vulnerability is triggered, granting the attacker elevated privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker spoofs a trusted entity or feature within Microsoft Office.\u003c/li\u003e\n\u003cli\u003eThe user is tricked into performing an action (e.g., entering credentials).\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-42832 could allow an attacker to perform convincing spoofing attacks, potentially leading to credential theft, data breaches, or other malicious activities. The impact is primarily limited to the local system, but if the user has elevated privileges, the attacker could potentially gain further access to network resources.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the Microsoft patch referenced in \u003ca href=\"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42832\"\u003ehttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42832\u003c/a\u003e to remediate CVE-2026-42832.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect Suspicious Office Process Creation\u0026rdquo; to identify potential exploitation attempts related to this vulnerability based on spawned processes.\u003c/li\u003e\n\u003cli\u003eMonitor for unusual file modifications or registry changes associated with Microsoft Office applications, as these could indicate exploitation.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-12T18:53:47Z","date_published":"2026-05-12T18:53:47Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-42832/","summary":"CVE-2026-42832 is an improper access control vulnerability in Microsoft Office that allows an unauthorized attacker to perform local spoofing.","title":"CVE-2026-42832 — Microsoft Office Improper Access Control Vulnerability Leading to Spoofing","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-42832/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-42832","version":"https://jsonfeed.org/version/1.1"}