{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/balena-etcher/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.5,"id":"CVE-2026-30332"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["privilege-escalation","toctou","balena-etcher"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eBalena Etcher for Windows versions prior to 2.1.4 are susceptible to a Time-of-Check to Time-of-Use (TOCTOU) race condition vulnerability (CVE-2026-30332). This flaw arises during the flashing process where a legitimate script can be replaced with a malicious payload. An attacker with local access and the ability to influence the file system can exploit this vulnerability to escalate privileges and execute arbitrary code. The successful exploitation of this issue can lead to a complete compromise of the affected system, granting the attacker full control. This is particularly concerning for environments where users with limited privileges routinely use Balena Etcher.\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 where Balena Etcher is installed (versions prior to 2.1.4).\u003c/li\u003e\n\u003cli\u003eThe attacker identifies a legitimate script used by Balena Etcher during the flashing process.\u003c/li\u003e\n\u003cli\u003eThe attacker monitors the file system for Balena Etcher to access the targeted legitimate script.\u003c/li\u003e\n\u003cli\u003eBefore Etcher uses the legitimate script, the attacker leverages the TOCTOU vulnerability by rapidly replacing the legitimate script with a malicious script of the same name.\u003c/li\u003e\n\u003cli\u003eBalena Etcher, still operating under elevated privileges due to its intended function, executes the attacker-controlled script.\u003c/li\u003e\n\u003cli\u003eThe malicious script performs actions to escalate privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker executes arbitrary code within the context of the elevated privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves persistence and 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 CVE-2026-30332 allows an attacker to escalate privileges on a Windows system running a vulnerable version of Balena Etcher. This can lead to the execution of arbitrary code, potentially resulting in data theft, system compromise, or denial of service. The vulnerability affects versions prior to 2.1.4, and if left unpatched, could lead to widespread exploitation in environments where Balena Etcher is commonly used.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Balena Etcher to version 2.1.4 or later to patch the vulnerability (CVE-2026-30332).\u003c/li\u003e\n\u003cli\u003eImplement file integrity monitoring on the Balena Etcher installation directory to detect unauthorized modifications to script files.\u003c/li\u003e\n\u003cli\u003eMonitor process creation events for unexpected processes spawned by Balena Etcher to identify potential exploitation attempts. Deploy the Sigma rule \u003ccode\u003eDetect Suspicious Balena Etcher Child Processes\u003c/code\u003e to your SIEM.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-02T16:16:22Z","date_published":"2026-04-02T16:16:22Z","id":"/briefs/2026-04-balena-etcher-toctou/","summary":"A Time-of-Check to Time-of-Use (TOCTOU) race condition vulnerability in Balena Etcher for Windows prior to v2.1.4 allows attackers to escalate privileges and execute arbitrary code by replacing a legitimate script with a crafted payload during the flashing process.","title":"Balena Etcher for Windows TOCTOU Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-04-balena-etcher-toctou/"}],"language":"en","title":"CraftedSignal Threat Feed — Balena-Etcher","version":"https://jsonfeed.org/version/1.1"}