Windows apps · Application version · June 23, 2022

Mozilla Firefox ESR (en-US) 102.0

Mozilla Firefox ESR (en-US) 102.0, released June 23, 2022, fixes 119 CVEs in Mozilla Firefox ESR (en-US). 2 of them are being exploited (CVE-2022-26485); 2 on CISA KEV. Patch Radar priority: Patch now. The latest Mozilla Firefox ESR (en-US) is 153.7.0, which also fixes every one of these CVEs.

Patch now2 on CISA KEV

Superseded. The latest Mozilla Firefox ESR (en-US) is 153.7.0, which also fixes every CVE on this page. Install that instead.

CVEs closed
119
7 rated Critical
Exploited
2
CVE-2022-26485
Highest CVSS
10.0
Base score, 0 to 10
Highest EPSS
0.2394
97th percentile

Priority of the 119 CVEs

Patch now 2 Urgent 5 High 86 Routine 26

Applies to

ProductVersion
Mozilla Firefox ESR (en-US)102.0

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Patch now CVE-2022-26485 Mozilla Firefox Use-After-Free Vulnerability9.8 0.1426 KEVExploited
Patch now CVE-2022-26486 Mozilla Firefox Use-After-Free Vulnerability9.8 0.0236 KEVExploited
Urgent CVE-2021-4129 Mozilla Firefox ESR and 3 others: Out-of-bounds Write9.8 0.0106 None reported
Urgent CVE-2022-26384 Mozilla Thunderbird and 4 others: Protection Mechanism Failure9.8 0.0097 None reported
Urgent CVE-2022-26381 Mozilla Thunderbird and 4 others: Use After Free9.8 0.0087 None reported
Urgent CVE-2022-26383 Mozilla Thunderbird and 4 others: User Interface (UI) Misrepresentation of Critical Information9.8 0.0073 None reported
Urgent CVE-2022-26387 Mozilla Thunderbird and 4 others: Time-of-check Time-of-use (TOCTOU) Race Condition9.8 0.0066 None reported
High CVE-2022-2200 Mozilla Thunderbird and 4 others: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')9.8 0.2394 None reported
High CVE-2021-38503 Mozilla Firefox ESR and 3 others: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass…10.0 0.0412 None reported
High CVE-2021-30547 Chromium: CVE-2021-30547 Out of bounds write in ANGLE8.8 0.0361 None reported
High CVE-2022-28281 Mozilla Thunderbird and 4 others: Out-of-bounds Write8.8 0.0278 None reported
High CVE-2022-28282 Mozilla Thunderbird and 4 others: Use After Free8.8 0.0218 None reported
High CVE-2021-43537 Mozilla Firefox ESR and 3 others: An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory…9.8 0.0209 None reported
High CVE-2021-43542 Mozilla Firefox ESR and 3 others: Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages…9.8 0.0183 None reported
High CVE-2021-38504 Mozilla Firefox ESR and 3 others: When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after-free…9.8 0.0177 None reported
High CVE-2021-43536 Mozilla Firefox ESR and 3 others: Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose…9.8 0.0174 None reported
High CVE-2021-43539 Mozilla Firefox ESR and 3 others: Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC…9.8 0.0173 None reported
High CVE-2021-43545 Mozilla Firefox ESR and 3 others: Using the Location API in a loop could have caused severe application hangs and crashes.9.8 0.0172 None reported
High CVE-2021-38496 Mozilla Firefox ESR and 3 others: During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting…8.8 0.0166 None reported
High CVE-2021-43541 Mozilla Firefox ESR and 3 others: When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was…9.8 0.0163 None reported
High CVE-2021-38506 Mozilla Firefox ESR and 3 others: Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning…7.5 0.0151 None reported
High CVE-2021-43546 Mozilla Firefox ESR and 3 others: It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.9.8 0.0151 None reported
High CVE-2021-38498 Mozilla Firefox ESR and 3 others: During process shutdown, a document could have caused a use-after-free of a languages service object,…7.5 0.0147 None reported
High CVE-2021-43543 Mozilla Firefox ESR and 3 others: Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by…9.8 0.0145 None reported
High CVE-2021-4140 Mozilla Firefox ESR and 3 others: XML Injection (aka Blind XPath Injection)10.0 0.0141 None reported
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