{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/avast-antivirus/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Avast Antivirus","AVG Technologies Anti-Virus"],"_cs_severities":["medium"],"_cs_tags":["privilege-escalation","antivirus","windows"],"_cs_type":"advisory","_cs_vendors":["Avast","AVG Technologies"],"content_html":"\u003cp\u003eA vulnerability exists in Avast Antivirus and AVG Technologies Anti-Virus that allows a local attacker to escalate their privileges. This vulnerability could allow an attacker with limited access to gain elevated permissions, potentially leading to unauthorized access, data manipulation, or system compromise. While the specific details of the vulnerability are not provided, the potential impact necessitates immediate attention from security teams. The absence of a CVE identifier or specific exploitation details requires proactive threat hunting and monitoring for suspicious activity related to Avast and AVG processes.\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, potentially through phishing, social engineering, or exploiting another vulnerability.\u003c/li\u003e\n\u003cli\u003eAttacker identifies the presence of Avast Antivirus or AVG Technologies Anti-Virus on the system.\u003c/li\u003e\n\u003cli\u003eAttacker leverages an unspecified vulnerability within Avast or AVG to execute code with elevated privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious payload designed to exploit the vulnerability.\u003c/li\u003e\n\u003cli\u003eThe payload interacts with vulnerable Avast/AVG processes, triggering the privilege escalation.\u003c/li\u003e\n\u003cli\u003eAttacker successfully escalates privileges, gaining SYSTEM or Administrator level access.\u003c/li\u003e\n\u003cli\u003eAttacker leverages escalated privileges to install malware, modify system configurations, or exfiltrate sensitive data.\u003c/li\u003e\n\u003cli\u003eAttacker maintains persistence on the compromised system using the newly acquired elevated privileges.\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 or Administrator, leading to complete system compromise. This can result in data theft, malware installation, and unauthorized access to sensitive information. While the exact number of potential victims is unknown, given the widespread use of Avast and AVG antivirus products, the impact could be significant.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor process creation events for suspicious activity involving Avast Antivirus and AVG Technologies Anti-Virus binaries using the provided Sigma rules.\u003c/li\u003e\n\u003cli\u003eInvestigate any unusual registry modifications or file system changes performed by Avast or AVG processes, looking for signs of exploitation based on the Sigma rules.\u003c/li\u003e\n\u003cli\u003eConduct regular security audits of systems running Avast and AVG antivirus products to identify and remediate any potential misconfigurations that could facilitate exploitation.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-08T10:10:54Z","date_published":"2026-05-08T10:10:54Z","id":"/briefs/2026-05-avast-privesc/","summary":"A local attacker can exploit a vulnerability in Avast Antivirus and AVG Technologies Anti-Virus to escalate privileges on a Windows system.","title":"Avast Antivirus Privilege Escalation Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-avast-privesc/"}],"language":"en","title":"CraftedSignal Threat Feed — Avast Antivirus","version":"https://jsonfeed.org/version/1.1"}