Vulnerabilities in Mozilla

2,105 results
Vexday analysis

Com 1.857 CVEs catalogadas e 189 classificadas como críticas, o histórico de vulnerabilidades da Mozilla reflete a complexidade de manter um navegador amplamente adotado. A taxa de exploração ativa — 9 entradas no CISA KEV, representando 0,48% do total — está em linha com a média geral do catálogo, o que indica um nível de exposição operacional compatível com o setor, sem desvio negativo expressivo. O tipo de falha mais recorrente é CWE-416 (use-after-free), uma classe de vulnerabilidade de memória com alto potencial de execução de código, e a CVE mais perigosa atualmente ativa, CVE-2016-9079, apresenta EPSS de 0,8792 — valor elevado que sugere probabilidade significativa de exploração continuada. Os 144 CVEs surgidos nos últimos 90 dias e a existência de 27 provas de conceito públicas reforçam a necessidade de monitoramento contínuo e priorização ágil de patches para ambientes que dependem de produtos Mozilla.

CVE-2026-0878HIGHSandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL componentEPSS 0.5%CVE-2025-8042CRITICALSandboxed iframe could start downloadsEPSS 0.5%CVE-2024-1556MEDIUMThe incorrect object was checked for NULL in the built-in profiler, potentially leading to invalid memory access and undefined behavior. *NoEPSS 0.5%CVE-2026-2789HIGHUse-after-free in the Graphics: ImageLib componentEPSS 0.5%CVE-2023-29547MEDIUMWhen a secure cookie existed in the Firefox cookie jar an insecure cookie for the same domain could have been created, when it should have sEPSS 0.5%CVE-2026-2787HIGHUse-after-free in the DOM: Window and Location componentEPSS 0.5%CVE-2026-0882HIGHUse-after-free in the IPC componentEPSS 0.5%CVE-2025-9185HIGHMemory safety bugs fixed in Firefox ESR 115.27, Firefox ESR 128.14, Thunderbird ESR 128.14, Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142EPSS 0.5%CVE-2026-0884CRITICALUse-after-free in the JavaScript Engine componentEPSS 0.5%CVE-2024-5694HIGHAn attacker could have caused a use-after-free in the JavaScript engine to read memory in the JavaScript string section of the heap. This vuEPSS 0.5%CVE-2020-15679HIGHAn OAuth session fixation vulnerability existed in the VPN login flow, where an attacker could craft a custom login URL, convince a VPN userEPSS 0.5%CVE-2026-2795HIGHUse-after-free in the JavaScript: GC componentEPSS 0.5%CVE-2021-43529CRITICALThunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. ThundeEPSS 0.5%CVE-2026-2797HIGHUse-after-free in the JavaScript: GC componentEPSS 0.5%CVE-2026-7322HIGHMemory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1EPSS 0.5%CVE-2026-2799HIGHUse-after-free in the DOM: Core & HTML componentEPSS 0.5%CVE-2026-16360CRITICALMemory safety bugs fixed in Firefox ESR 115.38, Firefox ESR 140.13 and Firefox 153EPSS 0.5%CVE-2026-2634CRITICALSpoofed web content presented under trusted domains using scripted navigation on Firefox iOSEPSS 0.5%CVE-2022-36317MEDIUMWhen visiting a website with an overly long URL, the user interface would start to hang. Due to session restore, this could lead to a permanEPSS 0.5%CVE-2026-0883MEDIUMInformation disclosure in the Networking componentEPSS 0.5%