https://feed.craftedsignal.io/tags/cve-2026-4720/Trending threats, MITRE ATT&CK coverage, and detection metadata — refreshed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioWed, 25 Mar 2026 12:00:00 +0000https://feed.craftedsignal.io/briefs/2026-03-firefox-memory-safety/Wed, 25 Mar 2026 12:00:00 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-03-firefox-memory-safety/A memory safety vulnerability (CVE-2026-4720) in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148 could lead to memory corruption and potential arbitrary code execution if successfully exploited.<p>A critical memory safety vulnerability, tracked as CVE-2026-4720, affects Mozilla Firefox and Thunderbird. Specifically, Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148, and Thunderbird 148 are vulnerable. The identified memory safety bugs exhibit evidence of memory corruption, suggesting that with sufficient effort, attackers could exploit these vulnerabilities to execute arbitrary code on affected systems. Users of Firefox versions prior to 149, Firefox ESR versions prior to 140.9…</p> criticaladvisorycve-2026-4720firefoxthunderbirdmemory-corruptionarbitrary-code-execution