{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-35245/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.5,"id":"CVE-2026-35245"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["medium"],"_cs_tags":["virtualbox","rdp","dos","cve-2026-35245"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-35245 is a vulnerability affecting Oracle VM VirtualBox version 7.2.6. This vulnerability resides in the Core component of VirtualBox and can be exploited by unauthenticated attackers with network access to the RDP service. Successful exploitation leads to a denial-of-service (DOS) condition, causing the VirtualBox application to hang or crash. The vulnerability\u0026rsquo;s ease of exploitation makes it a significant threat to systems running vulnerable versions of VirtualBox exposed to untrusted networks. This vulnerability allows an attacker to disrupt virtual machine operations, potentially impacting services relying on the virtualized environment.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a target system running Oracle VM VirtualBox version 7.2.6 with the RDP service exposed.\u003c/li\u003e\n\u003cli\u003eThe attacker establishes a network connection to the target system\u0026rsquo;s RDP port (typically TCP 3389).\u003c/li\u003e\n\u003cli\u003eThe attacker sends a specially crafted RDP request to the vulnerable VirtualBox instance, exploiting CVE-2026-35245.\u003c/li\u003e\n\u003cli\u003eThe malicious RDP request triggers a flaw within the VirtualBox Core component.\u003c/li\u003e\n\u003cli\u003eThe VirtualBox application enters a hung state due to the unhandled exception.\u003c/li\u003e\n\u003cli\u003eAlternatively, the VirtualBox application may crash due to the exploited vulnerability.\u003c/li\u003e\n\u003cli\u003eThe virtual machines hosted on the affected VirtualBox instance become unavailable.\u003c/li\u003e\n\u003cli\u003eThe attacker successfully causes a denial-of-service (DOS) condition, disrupting VirtualBox operations.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-35245 results in a denial-of-service condition, where the Oracle VM VirtualBox application hangs or crashes. This impacts the availability of virtual machines running on the affected VirtualBox instance, potentially disrupting critical services and applications. The vulnerability affects VirtualBox version 7.2.6 and poses a risk to organizations utilizing this virtualization platform, especially those with exposed RDP services. The CVSS v3.1 base score is 7.5, reflecting the high availability impact.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Oracle VM VirtualBox to a version beyond 7.2.6 to patch CVE-2026-35245.\u003c/li\u003e\n\u003cli\u003eImplement network segmentation and access controls to restrict access to the RDP service, mitigating the risk of external attackers exploiting CVE-2026-35245.\u003c/li\u003e\n\u003cli\u003eMonitor RDP connections for suspicious activity, such as connections from unexpected source IPs, to detect potential exploitation attempts targeting CVE-2026-35245.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetectSuspiciousRDPConnections\u003c/code\u003e to identify unusual RDP activity that may indicate exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-21T21:16:40Z","date_published":"2026-04-21T21:16:40Z","id":"/briefs/2026-04-virtualbox-dos/","summary":"An unauthenticated attacker with network access via RDP can exploit CVE-2026-35245 in Oracle VM VirtualBox version 7.2.6 to cause a denial-of-service (DOS) condition.","title":"Oracle VirtualBox Unauthenticated RDP Denial-of-Service Vulnerability (CVE-2026-35245)","url":"https://feed.craftedsignal.io/briefs/2026-04-virtualbox-dos/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-35245","version":"https://jsonfeed.org/version/1.1"}