| 315324 | Mozilla Firefox ESR < 115.36 | Nessus | Windows | 5/19/2026 | 5/22/2026 | critical |
| 315522 | Slackware Linux 15.0 / current mozilla-firefox Multiple Vulnerabilities (SSA:2026-139-02) | Nessus | Slackware Local Security Checks | 5/19/2026 | 5/22/2026 | critical |
| 315940 | Debian dla-4592 : firefox-esr - security update | Nessus | Debian Local Security Checks | 5/20/2026 | 5/22/2026 | critical |
| 315943 | Debian dsa-6283 : firefox-esr - security update | Nessus | Debian Local Security Checks | 5/20/2026 | 5/22/2026 | critical |
| 315431 | Mozilla Thunderbird < 140.11 | Nessus | MacOS X Local Security Checks | 5/19/2026 | 5/22/2026 | critical |
| 315432 | Mozilla Thunderbird < 151.0 | Nessus | Windows | 5/19/2026 | 5/22/2026 | critical |
| 315433 | Mozilla Thunderbird < 140.11 | Nessus | Windows | 5/19/2026 | 5/22/2026 | critical |
| 315326 | Mozilla Firefox ESR < 140.11 | Nessus | MacOS X Local Security Checks | 5/19/2026 | 5/22/2026 | critical |
| 315524 | Linux Distros Unpatched Vulnerability : CVE-2026-8953 | Nessus | Misc. | 5/19/2026 | 5/25/2026 | critical |
| 315322 | Mozilla Firefox ESR < 115.36 | Nessus | MacOS X Local Security Checks | 5/19/2026 | 5/22/2026 | critical |
| 315985 | Fedora 44 : firefox (2026-f3409cf313) | Nessus | Fedora Local Security Checks | 5/20/2026 | 5/22/2026 | critical |
| 316766 | SUSE SLES12 Security Update : MozillaFirefox (SUSE-SU-2026:2039-1) | Nessus | SuSE Local Security Checks | 5/26/2026 | 5/26/2026 | critical |
| 315434 | Mozilla Thunderbird < 151.0 | Nessus | MacOS X Local Security Checks | 5/19/2026 | 5/22/2026 | critical |
| 315967 | Fedora 43 : firefox / nss (2026-cd20332935) | Nessus | Fedora Local Security Checks | 5/20/2026 | 5/22/2026 | critical |
| 316628 | Fedora 42 : firefox / nss (2026-7f6ee801e2) | Nessus | Fedora Local Security Checks | 5/25/2026 | 5/25/2026 | critical |
| 315323 | Mozilla Firefox < 151.0 | Nessus | Windows | 5/19/2026 | 5/27/2026 | critical |
| 315325 | Mozilla Firefox ESR < 140.11 | Nessus | Windows | 5/19/2026 | 5/22/2026 | critical |
| 315520 | Slackware Linux 15.0 / current mozilla-thunderbird Multiple Vulnerabilities (SSA:2026-139-03) | Nessus | Slackware Local Security Checks | 5/19/2026 | 5/22/2026 | critical |
| 316857 | openSUSE 16 Security Update : MozillaFirefox (openSUSE-SU-2026:20789-1) | Nessus | SuSE Local Security Checks | 5/27/2026 | 5/27/2026 | critical |
| 315327 | Mozilla Firefox < 151.0 | Nessus | MacOS X Local Security Checks | 5/19/2026 | 5/27/2026 | critical |
| 316476 | Debian dsa-6288 : thunderbird - security update | Nessus | Debian Local Security Checks | 5/22/2026 | 5/22/2026 | critical |
| 316547 | Debian dla-4594 : thunderbird - security update | Nessus | Debian Local Security Checks | 5/25/2026 | 5/25/2026 | critical |
