2026 CVE Database
Every Critical and High CVE published in 2026, with the signals you need to decide what to fix first.
100 CVEs found
| CVE | Severity | Product | Weakness | EPSS | Published |
|---|---|---|---|---|---|
| CVE-2026-84143 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-119 Memory Buffer Errors | 0.4% | Sep 1, 2026 |
| CVE-2026-84142 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-119 Memory Buffer Errors | 0.6% | Sep 1, 2026 |
| CVE-2026-84141 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-190 Integer Overflow | 0.3% | Sep 1, 2026 |
| CVE-2026-84140 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-346 | 0.2% | Sep 1, 2026 |
| CVE-2026-84135 Mozilla Firefox Mobile | CRITICAL9.8 | Mozilla Firefox Mobile | CWE-20 Improper Input Validation | 0.4% | Sep 1, 2026 |
| CVE-2026-74944 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.6% | Aug 18, 2026 |
| CVE-2026-74943 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.6% | Aug 18, 2026 |
| CVE-2026-74940 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.6% | Aug 18, 2026 |
| CVE-2026-74936 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.6% | Aug 18, 2026 |
| CVE-2026-14241 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-787 Out of Bounds Write | 0.4% | Jun 30, 2026 |
| CVE-2026-12293 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.3% | Jun 16, 2026 |
| CVE-2026-5735 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-787 Out of Bounds Write | 0.5% | Apr 7, 2026 |
| CVE-2026-5734 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-787 Out of Bounds Write | 0.6% | Apr 7, 2026 |
| CVE-2026-4727 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-400 Uncontrolled Resource Consumption | 0.5% | Mar 24, 2026 |
| CVE-2026-4726 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-400 Uncontrolled Resource Consumption | 0.5% | Mar 24, 2026 |
| CVE-2026-4725 Mozilla Firefox | CRITICAL10.0 | Mozilla Firefox | CWE-416 Use After Free | 0.4% | Mar 24, 2026 |
| CVE-2026-4724 Mozilla Firefox | CRITICAL9.1 | Mozilla Firefox | CWE-758 | 0.4% | Mar 24, 2026 |
| CVE-2026-4723 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.5% | Mar 24, 2026 |
| CVE-2026-4719 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.4% | Mar 24, 2026 |
| CVE-2026-4718 Mozilla Firefox | HIGH8.1 | Mozilla Firefox | CWE-758 | 0.5% | Mar 24, 2026 |
| CVE-2026-4717 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | Not classified | 0.4% | Mar 24, 2026 |
| CVE-2026-4716 Mozilla Firefox | CRITICAL9.1 | Mozilla Firefox | CWE-908 | 0.4% | Mar 24, 2026 |
| CVE-2026-4715 Mozilla Firefox | CRITICAL9.1 | Mozilla Firefox | CWE-908 | 0.4% | Mar 24, 2026 |
| CVE-2026-4714 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.4% | Mar 24, 2026 |
| CVE-2026-4713 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.4% | Mar 24, 2026 |
| CVE-2026-4712 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-200 Information Exposure | 0.4% | Mar 24, 2026 |
| CVE-2026-4711 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.4% | Mar 24, 2026 |
| CVE-2026-4710 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-119 Memory Buffer Errors | 0.4% | Mar 24, 2026 |
| CVE-2026-4709 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.5% | Mar 24, 2026 |
| CVE-2026-4708 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.4% | Mar 24, 2026 |
| CVE-2026-4707 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.6% | Mar 24, 2026 |
| CVE-2026-4706 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.5% | Mar 24, 2026 |
| CVE-2026-4705 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-758 | 0.6% | Mar 24, 2026 |
| CVE-2026-4704 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-400 Uncontrolled Resource Consumption | 0.6% | Mar 24, 2026 |
| CVE-2026-4702 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-843 | 0.7% | Mar 24, 2026 |
| CVE-2026-4701 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.5% | Mar 24, 2026 |
| CVE-2026-4700 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-288 Authentication Bypass via Alternate Path | 0.5% | Mar 24, 2026 |
| CVE-2026-4699 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.7% | Mar 24, 2026 |
| CVE-2026-4698 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-843 | 0.8% | Mar 24, 2026 |
| CVE-2026-4697 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.7% | Mar 24, 2026 |
| CVE-2026-4696 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.5% | Mar 24, 2026 |
| CVE-2026-4695 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.7% | Mar 24, 2026 |
| CVE-2026-4694 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-190 Integer Overflow | 0.8% | Mar 24, 2026 |
| CVE-2026-4693 Mozilla Firefox | HIGH7.5 | Mozilla Firefox | CWE-754 | 0.7% | Mar 24, 2026 |
| CVE-2026-4692 Mozilla Firefox | CRITICAL10.0 | Mozilla Firefox | CWE-653 | 0.5% | Mar 24, 2026 |
| CVE-2026-4691 Mozilla Firefox | CRITICAL9.8 | Mozilla Firefox | CWE-416 Use After Free | 0.5% | Mar 24, 2026 |
| CVE-2026-4690 Mozilla Firefox | HIGH8.6 | Mozilla Firefox | CWE-190 Integer Overflow | 0.8% | Mar 24, 2026 |
| CVE-2026-4689 Mozilla Firefox | CRITICAL10.0 | Mozilla Firefox | CWE-190 Integer Overflow | 0.7% | Mar 24, 2026 |
| CVE-2026-4688 Mozilla Firefox | CRITICAL10.0 | Mozilla Firefox | CWE-416 Use After Free | 0.5% | Mar 24, 2026 |
| CVE-2026-4687 Mozilla Firefox | HIGH8.6 | Mozilla Firefox | CWE-754 | 0.5% | Mar 24, 2026 |
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