{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/unpatched-vulnerability/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":["Windows RPC"],"_cs_severities":["high"],"_cs_tags":["privilege-escalation","windows","unpatched-vulnerability"],"_cs_type":"threat","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eAn unpatched vulnerability exists within the Microsoft Windows Remote Procedure Call (RPC) service. This vulnerability allows a local attacker to escalate their privileges on a vulnerable system. The specific details of the vulnerability are not disclosed, but successful exploitation would allow an attacker to perform actions with elevated permissions, potentially leading to complete system compromise. This poses a significant risk to systems where unauthorized users have local access. Defenders should prioritize detection and mitigation strategies to address this threat.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains initial local access to a Windows system through some method.\u003c/li\u003e\n\u003cli\u003eAttacker identifies the presence of the unpatched Windows RPC vulnerability.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious RPC request designed to exploit the vulnerability.\u003c/li\u003e\n\u003cli\u003eThe malicious RPC request is sent to the Windows RPC service.\u003c/li\u003e\n\u003cli\u003eThe Windows RPC service processes the request, triggering the vulnerability.\u003c/li\u003e\n\u003cli\u003eThe vulnerability allows the attacker to execute code with elevated privileges (e.g., SYSTEM).\u003c/li\u003e\n\u003cli\u003eAttacker leverages elevated privileges to install malware, modify system configurations, or access sensitive data.\u003c/li\u003e\n\u003cli\u003eAttacker establishes persistent access and expands their control over the compromised system.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows a local attacker to escalate their privileges to SYSTEM. This allows the attacker to perform any action on the system, including installing malware, creating new accounts with administrative privileges, accessing sensitive data, and disrupting system operations. The impact is critical, as a successful attack can lead to complete system compromise and potential data breaches.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEnable process creation monitoring to detect suspicious processes spawned by the RPC service (see rules below).\u003c/li\u003e\n\u003cli\u003eMonitor for unusual registry modifications that might indicate privilege escalation attempts (see rules below).\u003c/li\u003e\n\u003cli\u003eContinuously monitor Microsoft\u0026rsquo;s security advisories for a patch addressing this Windows RPC vulnerability.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-30T11:16:31Z","date_published":"2026-04-30T11:16:31Z","id":"/briefs/2026-05-windows-rpc-privesc/","summary":"A local attacker can exploit an unpatched vulnerability in Microsoft Windows RPC to escalate privileges.","title":"Unpatched Microsoft Windows RPC Vulnerability Allows Privilege Escalation","url":"https://feed.craftedsignal.io/briefs/2026-05-windows-rpc-privesc/"}],"language":"en","title":"CraftedSignal Threat Feed — Unpatched-Vulnerability","version":"https://jsonfeed.org/version/1.1"}