Windows apps · Mozilla
Mozilla Firefox ESR (sat) security updates
The latest version of Mozilla Firefox ESR (sat) is 153.1.0, released August 18, 2026. Patch Radar has 3 security fixes for Mozilla Firefox ESR (sat), closing 575 CVEs, 1 of which is being exploited. The newest security fix is Mozilla Firefox ESR (sat) 153.1.0, released August 18, 2026. 191 CVEs have no fix yet.
1 exploited CVEs191 with no fix yet
Latest version
153.1.0
Released Aug 18, 2026
Security fixes
3
On record in Patch Radar
CVEs
575
Closed by those fixes
Exploited
1
Vendor report or CISA KEV
CVEs with no fix yet
| Priority | CVE | Title | Status |
|---|---|---|---|
| Urgent | CVE-2026-100760 | Sandbox escape in the Security: Process Sandboxing component | no-fix |
| Urgent | CVE-2026-100763 | Incorrect boundary conditions in the Graphics: WebGPU component | no-fix |
| Urgent | CVE-2026-100787 | Sandbox escape in the XUL component | no-fix |
| Urgent | CVE-2026-100800 | Sandbox escape due to use-after-free in the Disability Access APIs component | no-fix |
| Urgent | CVE-2026-100804 | Sandbox escape due to use-after-free in the Preferences: Backend component | no-fix |
| Urgent | CVE-2026-100810 | Other issue in the DevTools component | no-fix |
| Urgent | CVE-2026-100828 | Mitigation bypass in the Bookmarks & History component | no-fix |
| Urgent | CVE-2026-100829 | Mitigation bypass in the DOM: Security component | no-fix |
| Urgent | CVE-2026-106016 | Mitigation bypass in the File Handling component | no-fix |
| Urgent | CVE-2026-74956 | Same-origin policy bypass in the DOM: Service Workers component | no-fix |
| Urgent | CVE-2026-74979 | Mitigation bypass in the Add-ons Manager component | no-fix |
| Urgent | CVE-2026-74989 | Internally found bugs fixed in Thunderbird 154 | no-fix |
| Urgent | CVE-2026-84134 | Other issue in the Profile Backup component | no-fix |
| Urgent | CVE-2026-84142 | Internally found bugs fixed in Thunderbird 155 | no-fix |
| Urgent | CVE-2026-92034 | Site isolation issue in the Graphics component | no-fix |
| Urgent | CVE-2026-92036 | Incorrect boundary conditions in the Networking: HTTP component | no-fix |
| Urgent | CVE-2026-92037 | Incorrect boundary conditions in the DOM: Animation component | no-fix |
| Urgent | CVE-2026-92038 | Mitigation bypass in the Remote Settings Client component | no-fix |
| Urgent | CVE-2026-92041 | Mitigation bypass in the DOM: Networking component | no-fix |
| Urgent | CVE-2026-92045 | Sandbox escape due to incorrect boundary conditions in the WebRTC component | no-fix |
| Urgent | CVE-2026-92048 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component | no-fix |
| Urgent | CVE-2026-92050 | Sandbox escape due to race condition in the XPConnect component | no-fix |
| Urgent | CVE-2026-92051 | Spoofing issue due to invalid pointer in the Graphics component | no-fix |
| Urgent | CVE-2026-92057 | Mitigation bypass in the Enterprise Policies component | no-fix |
| Urgent | CVE-2026-92059 | Incorrect boundary conditions in the DOM: Editor component | no-fix |
| Urgent | CVE-2026-92061 | Incorrect boundary conditions in the Security: Process Sandboxing component | no-fix |
| Urgent | CVE-2026-92066 | Sandbox escape in the Profile Backup component | no-fix |
| Urgent | CVE-2026-92071 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component | no-fix |
| Urgent | CVE-2026-92075 | Mitigation bypass in the Networking component | no-fix |
| Urgent | CVE-2026-92079 | Mitigation bypass in the Widget: Win32 component | no-fix |
| High | CVE-2026-100756 | Incorrect boundary conditions in the Audio/Video: Playback component | no-fix |
| High | CVE-2026-100757 | Use-after-free in the Widget component | no-fix |
| High | CVE-2026-100758 | Sandbox escape in the DOM: Navigation component | no-fix |
| High | CVE-2026-100759 | Uninitialized memory in the Storage: Quota Manager component | no-fix |
| High | CVE-2026-100761 | Privilege escalation due to use-after-free in the Graphics: WebGPU component | no-fix |
| High | CVE-2026-100762 | Sandbox escape due to use-after-free in the DOM: Content Processes component | no-fix |
| High | CVE-2026-100764 | Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component | no-fix |
| High | CVE-2026-100765 | Use-after-free in the JavaScript: WebAssembly component | no-fix |
| High | CVE-2026-100766 | Information disclosure in the Networking: JAR component | no-fix |
| High | CVE-2026-100767 | Use-after-free in the Networking: Cache component | no-fix |
| High | CVE-2026-100768 | Use-after-free in the Graphics: WebGPU component | no-fix |
| High | CVE-2026-100769 | Use-after-free in the JavaScript: WebAssembly component | no-fix |
| High | CVE-2026-100770 | Sandbox escape due to use-after-free in the DOM: Content Processes component | no-fix |
| High | CVE-2026-100771 | Undefined behavior in the DOM: Streams component | no-fix |
| High | CVE-2026-100772 | Use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-100773 | Use-after-free in the Storage: IndexedDB component | no-fix |
| High | CVE-2026-100774 | Use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-100775 | Sandbox escape in the Graphics component | no-fix |
| High | CVE-2026-100776 | Use-after-free in the JavaScript: WebAssembly component | no-fix |
| High | CVE-2026-100777 | Use-after-free in the Graphics: Canvas2D component | no-fix |
| High | CVE-2026-100778 | Sandbox escape due to use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-100779 | Use-after-free in the XSLT component | no-fix |
| High | CVE-2026-100780 | Use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-100781 | Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component | no-fix |
| High | CVE-2026-100782 | Privilege escalation due to incorrect boundary conditions in the Graphics component | no-fix |
| High | CVE-2026-100783 | Uninitialized memory in the Audio/Video component | no-fix |
| High | CVE-2026-100784 | Use-after-free in the Layout: Text and Fonts component | no-fix |
| High | CVE-2026-100785 | Use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-100786 | Sandbox escape due to use-after-free in the Graphics component | no-fix |
| High | CVE-2026-100788 | Invalid pointer in the JavaScript: WebAssembly component | no-fix |
| High | CVE-2026-100789 | Use-after-free in the Graphics: Canvas2D component | no-fix |
| High | CVE-2026-100790 | Use-after-free in the XSLT component | no-fix |
| High | CVE-2026-100791 | Use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-100792 | JIT miscompilation in the JavaScript: WebAssembly component | no-fix |
| High | CVE-2026-100794 | Sandbox escape due to incorrect boundary conditions in the Internationalization component | no-fix |
| High | CVE-2026-100796 | Use-after-free in the JavaScript: WebAssembly component | no-fix |
| High | CVE-2026-100797 | Privilege escalation due to use-after-free in the Graphics: WebRender component | no-fix |
| High | CVE-2026-100798 | Cryptography misuse in Storage: Quota Manager component | no-fix |
| High | CVE-2026-100801 | Privilege escalation in the DLL Services component | no-fix |
| High | CVE-2026-100803 | Same-origin policy bypass in the WebExtensions component | no-fix |
| High | CVE-2026-100805 | Race condition, use-after-free in the Audio/Video component | no-fix |
| High | CVE-2026-100807 | Privilege escalation in the DOM: Service Workers component | no-fix |
| High | CVE-2026-100808 | Mitigation bypass in the DOM: Service Workers component | no-fix |
| High | CVE-2026-100809 | Same-origin policy bypass in the DevTools component | no-fix |
| High | CVE-2026-100811 | Sandbox escape due to use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-100813 | Invalid pointer in the JavaScript Engine: JIT component | no-fix |
| High | CVE-2026-100814 | Incorrect boundary conditions in the JavaScript Engine: JIT component | no-fix |
| High | CVE-2026-100815 | Use-after-free in the CSS Parsing and Computation component | no-fix |
| High | CVE-2026-100816 | Site isolation issue in the DOM: Networking component | no-fix |
| High | CVE-2026-100818 | Sandbox escape due to use-after-free in the Widget: Gtk component | no-fix |
| High | CVE-2026-100819 | Sandbox escape due to incorrect boundary conditions in the XPCOM component | no-fix |
| High | CVE-2026-100820 | Privilege escalation in the Address Bar component | no-fix |
| High | CVE-2026-100821 | Site isolation issue in the Panning and Zooming component | no-fix |
| High | CVE-2026-100824 | Privilege escalation in the Places component | no-fix |
| High | CVE-2026-100825 | Use-after-free in the JavaScript Engine: JIT component | no-fix |
| High | CVE-2026-100830 | Mitigation bypass in the DOM: Navigation component | no-fix |
| High | CVE-2026-100831 | Use-after-free in the DOM: UI Events & Focus Handling component | no-fix |
| High | CVE-2026-100832 | Use-after-free in the Graphics: Canvas2D component | no-fix |
| High | CVE-2026-74937 | Use-after-free in the JavaScript: GC component | no-fix |
| High | CVE-2026-74938 | Mitigation bypass in the JavaScript: GC component | no-fix |
| High | CVE-2026-74940 | Use-after-free in the Graphics: Text component | no-fix |
| High | CVE-2026-74947 | Privilege escalation due to invalid pointer in the Graphics component | no-fix |
| High | CVE-2026-74950 | Privilege escalation in the Downloads API component | no-fix |
| High | CVE-2026-74952 | Privilege escalation in the Application Update component | no-fix |
| High | CVE-2026-74954 | Information disclosure due to side-channel in the Storage: Cache API component | no-fix |
| High | CVE-2026-74955 | Privilege escalation in the Request Handling component | no-fix |
| High | CVE-2026-74958 | Information disclosure in the WebRTC component | no-fix |
| High | CVE-2026-74963 | Same-origin policy bypass in the Networking: Cookies component | no-fix |
| High | CVE-2026-74965 | Privilege escalation in the Shell Integration component | no-fix |
| High | CVE-2026-75874 | Sandbox escape in the Remote Settings Client component | no-fix |
| High | CVE-2026-84119 | Sandbox escape due to use-after-free in the DOM: Navigation component | no-fix |
| High | CVE-2026-84120 | Use-after-free in the Audio/Video component | no-fix |
| High | CVE-2026-84121 | Sandbox escape due to use-after-free in the DOM: Security component | no-fix |
| High | CVE-2026-84122 | Use-after-free in the Audio/Video component | no-fix |
| High | CVE-2026-84123 | Privilege escalation due to use-after-free in the Graphics: WebGPU component | no-fix |
| High | CVE-2026-84124 | Use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-84128 | Privilege escalation in the WebDriver BiDi component | no-fix |
| High | CVE-2026-84129 | Site isolation issue in the DOM: Navigation component | no-fix |
| High | CVE-2026-84130 | Information disclosure in the Graphics: WebGPU component | no-fix |
| High | CVE-2026-84131 | Privilege escalation due to invalid pointer in the Graphics component | no-fix |
| High | CVE-2026-84132 | Information disclosure in the Networking: HTTP component | no-fix |
| High | CVE-2026-84133 | Site isolation issue in the DOM: Push Subscriptions component | no-fix |
| High | CVE-2026-84140 | Site isolation issue in the DOM: Navigation component | no-fix |
| High | CVE-2026-84141 | Integer overflow in the Graphics: ImageLib component | no-fix |
| High | CVE-2026-84143 | Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15 | no-fix |
| High | CVE-2026-84144 | Internally found bugs fixed in Thunderbird 155 and Thunderbird ESR 153.2 | no-fix |
| High | CVE-2026-84145 | Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15 | no-fix |
| High | CVE-2026-92005 | Use-after-free in the Audio/Video: Web Codecs component | no-fix |
| High | CVE-2026-92006 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92007 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92008 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92009 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92010 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92011 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92012 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92013 | Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92015 | Privilege escalation in the WebExtensions component | no-fix |
| High | CVE-2026-92016 | Use-after-free in the Disability Access APIs component | no-fix |
| High | CVE-2026-92017 | Privilege escalation in the DOM: Service Workers component | no-fix |
| High | CVE-2026-92018 | Sandbox escape in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-92019 | Mitigation bypass in the Remote Settings Client component | no-fix |
| High | CVE-2026-92020 | Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component | no-fix |
| High | CVE-2026-92022 | Use-after-free in the DOM: HTML Parser component | no-fix |
| High | CVE-2026-92023 | Use-after-free in the XML component | no-fix |
| High | CVE-2026-92024 | Use-after-free in the SVG component | no-fix |
| High | CVE-2026-92025 | Use-after-free in the DOM: Navigation component | no-fix |
| High | CVE-2026-92026 | Use-after-free in the Networking component | no-fix |
| High | CVE-2026-92027 | Use-after-free in the DOM: Streams component | no-fix |
| High | CVE-2026-92028 | Use-after-free in the DOM: Core & HTML component | no-fix |
| High | CVE-2026-92029 | Use-after-free in the SVG component | no-fix |
| High | CVE-2026-92030 | Mitigation bypass in the DOM: Copy & Paste and Drag & Drop component | no-fix |
| High | CVE-2026-92031 | Information disclosure in the Graphics: ImageLib component | no-fix |
| High | CVE-2026-92032 | Sandbox escape due to invalid pointer in the Graphics component | no-fix |
| High | CVE-2026-92035 | Sandbox escape due to incorrect boundary conditions in the Graphics component | no-fix |
| High | CVE-2026-92040 | Use-after-free in the JavaScript: WebAssembly component | no-fix |
| High | CVE-2026-92042 | Race condition in the DOM: Content Processes component | no-fix |
| High | CVE-2026-92043 | Privilege escalation due to incorrect boundary conditions in the Audio/Video component | no-fix |
| High | CVE-2026-92044 | Information disclosure in the Networking: HTTP component | no-fix |
| High | CVE-2026-92046 | Use-after-free in the Graphics component | no-fix |
| High | CVE-2026-92047 | Privilege escalation in the Crash Reporting component | no-fix |
| High | CVE-2026-92049 | Use-after-free in the Widget: Win32 component | no-fix |
| High | CVE-2026-92052 | Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92053 | Privilege escalation in the Graphics: CanvasWebGL component | no-fix |
| High | CVE-2026-92054 | Privilege escalation in the Memory component | no-fix |
| High | CVE-2026-92055 | Privilege escalation in the DevTools component | no-fix |
| High | CVE-2026-92056 | Use-after-free in the Graphics: Text component | no-fix |
| High | CVE-2026-92058 | Use-after-free in the Graphics component | no-fix |
| High | CVE-2026-92060 | Use-after-free in the Internationalization component | no-fix |
| High | CVE-2026-92062 | Privilege escalation in the Session Restore component | no-fix |
| High | CVE-2026-92064 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component | no-fix |
| High | CVE-2026-92065 | Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component | no-fix |
| High | CVE-2026-92067 | Use-after-free in the Widget: Gtk component | no-fix |
| High | CVE-2026-92072 | Incorrect boundary conditions in the Safe Browsing component | no-fix |
| High | CVE-2026-92073 | Privilege escalation in the Enterprise Policies component | no-fix |
| High | CVE-2026-92074 | Mitigation bypass in the Popup Blocker component | no-fix |
| High | CVE-2026-92076 | Incorrect boundary conditions in the Networking component | no-fix |
| High | CVE-2026-96869 | Information disclosure in the Networking component | no-fix |
| Routine | CVE-2026-100793 | JIT miscompilation in the JavaScript Engine component | no-fix |
| Routine | CVE-2026-100795 | Denial-of-service in the Networking component | no-fix |
| Routine | CVE-2026-100799 | Uninitialized memory in the Graphics: WebGPU component | no-fix |
| Routine | CVE-2026-100802 | Uninitialized memory in the Graphics: WebGPU component | no-fix |
| Routine | CVE-2026-100806 | Uninitialized memory in the Graphics: WebGPU component | no-fix |
| Routine | CVE-2026-100812 | Denial-of-service in the Graphics component | no-fix |
| Routine | CVE-2026-100817 | Other issue in the JavaScript: WebAssembly component | no-fix |
| Routine | CVE-2026-100822 | Spoofing issue in the Networking: HTTP component | no-fix |
| Routine | CVE-2026-100826 | Denial-of-service in the Storage: StorageManager component | no-fix |
| Routine | CVE-2026-74968 | Site isolation issue in the Graphics: WebRender component | no-fix |
| Routine | CVE-2026-84118 | Use-after-free in the JavaScript: GC component | no-fix |
| Routine | CVE-2026-84125 | Use-after-free in the DOM: Core & HTML component | no-fix |
| Routine | CVE-2026-84126 | Incorrect boundary conditions in the Layout: Grid component | no-fix |
| Routine | CVE-2026-84136 | Other issue in the DOM: Navigation component | no-fix |
| Routine | CVE-2026-84137 | Spoofing issue in the DOM: Core & HTML component | no-fix |
| Routine | CVE-2026-84138 | Denial-of-service in the PDF Viewer component | no-fix |
| Routine | CVE-2026-84139 | Clickjacking issue in the DOM: Events component | no-fix |
| Routine | CVE-2026-92039 | Mitigation bypass in the DOM: Notifications component | no-fix |
| Routine | CVE-2026-92063 | Denial-of-service in the Audio/Video component | no-fix |
| Routine | CVE-2026-92068 | Site isolation issue in the Reader Mode component | no-fix |
| Routine | CVE-2026-92069 | Spoofing issue in the DOM: Navigation component | no-fix |
| Routine | CVE-2026-92070 | Information disclosure in the Networking component | no-fix |
| Routine | CVE-2026-92077 | Denial-of-service in the SVG component | no-fix |
| Routine | CVE-2026-92078 | Denial-of-service in the Security component | no-fix |
Security fixes, newest first
| Priority | Fix | Fixed in | CVEs | Exploited | Released |
|---|---|---|---|---|---|
| Urgent | Mozilla Firefox ESR (sat) 153.1.0 | 153.1.0 | 39 | Aug 18, 2026 | |
| Patch now | Mozilla Firefox ESR (sat) 140.13.0 | 140.13.0 | 147 | 1 | Jul 20, 2026 |
| Urgent | Mozilla Firefox ESR (sat) 153.0.0 | 153.0.0 | 389 | Jul 20, 2026 |
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