{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-4713/feed.json","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":["Firefox","Firefox ESR","Thunderbird"],"_cs_severities":["high"],"_cs_tags":["cve-2026-4713","mozilla","firefox","thunderbird","denial-of-service","graphics"],"_cs_type":"advisory","_cs_vendors":["Mozilla"],"content_html":"\u003cp\u003eOn March 24, 2026, CVE-2026-4713 was published, detailing a vulnerability within the Graphics component of several Mozilla products. The vulnerability stems from incorrect boundary conditions, affecting Firefox versions prior to 149, Firefox ESR versions less than 140.9, and Thunderbird versions less than both 149 and 140.9. This flaw could be exploited to trigger a denial-of-service condition. Given the widespread use of these Mozilla applications, organizations should prioritize patching vulnerable installations. The vulnerability was reported to Mozilla and assigned CVE-2026-4713.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker crafts a malicious web page or email containing specially crafted graphics data.\u003c/li\u003e\n\u003cli\u003eA user opens the malicious web page in a vulnerable Firefox browser or views the malicious email in a vulnerable Thunderbird client.\u003c/li\u003e\n\u003cli\u003eThe vulnerable Graphics component attempts to process the crafted graphics data.\u003c/li\u003e\n\u003cli\u003eDue to incorrect boundary conditions, a buffer overflow or out-of-bounds write occurs.\u003c/li\u003e\n\u003cli\u003eThe application crashes due to the memory corruption.\u003c/li\u003e\n\u003cli\u003eThe user experiences a denial-of-service condition as the application becomes unresponsive or terminates.\u003c/li\u003e\n\u003cli\u003e(Hypothetical) In some scenarios, this could be leveraged for remote code execution.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-4713 leads to a denial-of-service condition. This can disrupt user workflows, cause data loss if the application crashes unexpectedly, and potentially impact productivity across an organization. The severity is rated as HIGH with a CVSS v3.1 base score of 7.5. While the immediate impact is a crash, there is a potential for further exploitation if the boundary condition error can be leveraged for code execution. Organizations using affected Firefox, Firefox ESR, and Thunderbird versions are vulnerable.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Firefox to version 149 or later.\u003c/li\u003e\n\u003cli\u003eUpgrade Firefox ESR to version 140.9 or later.\u003c/li\u003e\n\u003cli\u003eUpgrade Thunderbird to version 149 or later or 140.9 or later.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026quot;Detect Crashes in Firefox Graphics Component\u0026quot; to identify potential exploitation attempts based on application crashes (see \u0026quot;rules\u0026quot; section).\u003c/li\u003e\n\u003cli\u003eMonitor web server logs (category: webserver, product: linux/windows) for suspicious requests targeting the vulnerable graphics component.\u003c/li\u003e\n\u003cli\u003eMonitor endpoint logs for unexpected crashes of Firefox or Thunderbird processes.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-24T17:22:00Z","date_published":"2024-01-24T17:22:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-mozilla-cve-2026-4713/","summary":"CVE-2026-4713 is a high-severity vulnerability due to incorrect boundary conditions in the Graphics component of Mozilla Firefox, Firefox ESR, and Thunderbird, potentially leading to denial of service.","title":"Mozilla Products Graphics Component Boundary Condition Vulnerability (CVE-2026-4713)","url":"https://feed.craftedsignal.io/briefs/2024-01-mozilla-cve-2026-4713/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-4713","version":"https://jsonfeed.org/version/1.1"}