| 305161 | Mozilla Firefox ESR < 140.9.1 | Nessus | MacOS X Local Security Checks | 4/7/2026 | 4/30/2026 | critical |
| 305198 | Mozilla Thunderbird < 149.0.2 | Nessus | MacOS X Local Security Checks | 4/7/2026 | 4/30/2026 | critical |
| 305656 | Slackware Linux 15.0 / current mozilla-thunderbird Multiple Vulnerabilities (SSA:2026-098-02) | Nessus | Slackware Local Security Checks | 4/9/2026 | 4/30/2026 | critical |
| 307677 | Debian dsa-6202 : firefox-esr - security update | Nessus | Debian Local Security Checks | 4/21/2026 | 4/21/2026 | critical |
| 307683 | MiracleLinux 9 : firefox-140.9.1-1.el9_7.ML.1 (AXSA:2026-469:07) | Nessus | Miracle Linux Local Security Checks | 4/21/2026 | 4/21/2026 | critical |
| 309083 | RHEL 8 : thunderbird (RHSA-2026:9345) | Nessus | Red Hat Local Security Checks | 4/21/2026 | 4/21/2026 | critical |
| 309181 | MiracleLinux 8 : thunderbird-140.9.1-1.el8_10.ML.1 (AXSA:2026-485:09) | Nessus | Miracle Linux Local Security Checks | 4/22/2026 | 4/22/2026 | critical |
| 309207 | Oracle Linux 8 : thunderbird (ELSA-2026-9345) | Nessus | Oracle Linux Local Security Checks | 4/22/2026 | 4/30/2026 | critical |
| 314513 | TencentOS Server 4: firefox (TSSA-2026:0292) | Nessus | Tencent Local Security Checks | 5/14/2026 | 5/14/2026 | critical |
| 305196 | Mozilla Thunderbird < 149.0.2 | Nessus | Windows | 4/7/2026 | 4/30/2026 | critical |
| 305197 | Mozilla Thunderbird < 140.9.1 | Nessus | MacOS X Local Security Checks | 4/7/2026 | 4/30/2026 | critical |
| 306330 | SUSE SLES12 Security Update : MozillaFirefox (SUSE-SU-2026:1273-1) | Nessus | SuSE Local Security Checks | 4/14/2026 | 4/14/2026 | critical |
| 311841 | RHEL 9 : thunderbird (RHSA-2026:13342) | Nessus | Red Hat Local Security Checks | 5/4/2026 | 5/4/2026 | critical |
| 312091 | RHEL 9 : thunderbird (RHSA-2026:13533) | Nessus | Red Hat Local Security Checks | 5/4/2026 | 5/4/2026 | critical |
| 312182 | RHEL 8 : firefox (RHSA-2026:13683) | Nessus | Red Hat Local Security Checks | 5/5/2026 | 5/5/2026 | critical |
| 312257 | RHEL 8 : firefox (RHSA-2026:13682) | Nessus | Red Hat Local Security Checks | 5/5/2026 | 5/5/2026 | critical |
| 312397 | RHEL 9 : firefox (RHSA-2026:13922) | Nessus | Red Hat Local Security Checks | 5/6/2026 | 5/6/2026 | critical |
| 310145 | AlmaLinux 10 : thunderbird (ALSA-2026:9638) | Nessus | Alma Linux Local Security Checks | 4/24/2026 | 4/24/2026 | critical |
| 311114 | RHEL 10 : thunderbird (RHSA-2026:11813) | Nessus | Red Hat Local Security Checks | 4/30/2026 | 4/30/2026 | critical |
| 311201 | Amazon Linux 2 : thunderbird, --advisory ALAS2-2026-3271 (ALAS-2026-3271) | Nessus | Amazon Linux Local Security Checks | 4/30/2026 | 4/30/2026 | critical |
| 316708 | TencentOS Server 3: thunderbird (TSSA-2026:0360) | Nessus | Tencent Local Security Checks | 5/26/2026 | 5/26/2026 | critical |
| 307373 | AlmaLinux 9 : thunderbird (ALSA-2026:8459) | Nessus | Alma Linux Local Security Checks | 4/17/2026 | 4/17/2026 | critical |
