{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/webrtc/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-7339"}],"_cs_exploited":false,"_cs_products":["Chrome","Edge"],"_cs_severities":["critical"],"_cs_tags":["webrtc","heap-overflow","code-execution","cve-2026-7339"],"_cs_type":"advisory","_cs_vendors":["Google","Microsoft"],"content_html":"\u003cp\u003eCVE-2026-7339 is a critical heap buffer overflow vulnerability affecting the WebRTC (Web Real-Time Communication) component in Google Chrome and Microsoft Edge (Chromium-based). This vulnerability stems from improper memory management within WebRTC, potentially allowing a remote attacker to execute arbitrary code by crafting malicious web content. As Microsoft Edge ingests Chromium, it is also vulnerable. Users of Chrome and Edge are affected. Defenders should apply available patches promptly to mitigate potential exploitation.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker crafts a malicious website designed to trigger the WebRTC vulnerability.\u003c/li\u003e\n\u003cli\u003eThe victim visits the malicious website using a vulnerable version of Chrome or Edge.\u003c/li\u003e\n\u003cli\u003eThe website uses JavaScript to initiate a WebRTC session.\u003c/li\u003e\n\u003cli\u003eThe crafted WebRTC data triggers a heap buffer overflow during memory allocation within the WebRTC component.\u003c/li\u003e\n\u003cli\u003eThe overflow overwrites adjacent memory regions on the heap.\u003c/li\u003e\n\u003cli\u003eThe attacker carefully crafts the overflow data to overwrite critical program data or function pointers.\u003c/li\u003e\n\u003cli\u003eThe corrupted data leads to arbitrary code execution within the context of the browser process.\u003c/li\u003e\n\u003cli\u003eThe attacker gains control of the user\u0026rsquo;s browser and potentially the underlying system.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-7339 can lead to arbitrary code execution, allowing an attacker to potentially install malware, steal sensitive information, or take control of the affected system. Given the widespread use of Chrome and Edge, this vulnerability could impact a large number of users across various sectors, including individuals, businesses, and government organizations.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the latest security updates for Google Chrome and Microsoft Edge (Chromium-based) to patch CVE-2026-7339.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect WebRTC Heap Overflow Attempt\u0026rdquo; to identify potential exploitation attempts targeting CVE-2026-7339.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for unusual requests or patterns associated with WebRTC usage that could indicate exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-01T02:21:27Z","date_published":"2026-05-01T02:21:27Z","id":"/briefs/2026-05-chromium-webrtc-overflow/","summary":"A heap buffer overflow vulnerability exists in the WebRTC component of Google Chrome and Microsoft Edge (Chromium-based), potentially leading to code execution.","title":"CVE-2026-7339: Heap Buffer Overflow in WebRTC","url":"https://feed.craftedsignal.io/briefs/2026-05-chromium-webrtc-overflow/"},{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["medium"],"_cs_tags":["webrtc","denial-of-service","firefox","thunderbird"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-4704 is a denial-of-service vulnerability residing in the WebRTC Signaling component of Mozilla products. This flaw impacts Firefox versions prior to 149, Firefox ESR versions before 140.9, Thunderbird versions lower than 149, and Thunderbird also prior to version 140.9. Successful exploitation of this vulnerability could lead to a denial-of-service condition, rendering the affected application unavailable. The vulnerability was disclosed on March 24, 2026. Defenders should prioritize…\u003c/p\u003e\n","date_modified":"2026-03-24T13:16:06Z","date_published":"2026-03-24T13:16:06Z","id":"/briefs/2026-03-webrtc-dos/","summary":"CVE-2026-4704 is a denial-of-service vulnerability in the WebRTC Signaling component affecting Firefox, Firefox ESR, and Thunderbird, potentially disrupting service availability.","title":"WebRTC Signaling Denial-of-Service Vulnerability (CVE-2026-4704)","url":"https://feed.craftedsignal.io/briefs/2026-03-webrtc-dos/"}],"language":"en","title":"CraftedSignal Threat Feed — Webrtc","version":"https://jsonfeed.org/version/1.1"}