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Firefox Focus CVE-2022-26485

HIGH
Use After Free (CWE-416)
2022-12-22 security@mozilla.org
8.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Added to CISA KEV
Jul 14, 2026 - 04:22 CISA
CVE Published
Dec 22, 2022 - 20:15 nvd
HIGH 8.8

DescriptionNVD

Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.

AnalysisAI

Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Removing an XSLT parameter during processing could have lead to an exploitable use-after-free. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0. Affected products include: Mozilla Firefox, Mozilla Firefox Focus, Mozilla Thunderbird.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

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An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape. Rated c

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Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android. Rated critical sev

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An attacker could have executed unauthorized scripts on top origin sites using a JavaScript URI when opening an external

CVE-2024-0605 HIGH
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Using a javascript: URI with a setTimeout race condition, an attacker can execute unauthorized scripts on top origin sit

CVE-2023-25743 HIGH
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A lack of in app notification for entering fullscreen mode could have lead to a malicious website spoofing browser chrom

CVE-2023-29546 MEDIUM
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When recording the screen while in Private Browsing on Firefox for Android the address bar and keyboard were not hidden,

CVE-2024-10474 MEDIUM
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Focus was incorrectly allowing internal links to utilize the app scheme used for deeplinking, which could result in link

CVE-2024-0606 MEDIUM
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An attacker could execute unauthorized script on a legitimate site through UXSS using window.open() by opening a javascr

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CVE-2024-5022 MEDIUM
4.4 May 17

The file scheme of URLs would be hidden, resulting in potential spoofing of a website's address in the location bar This

CVE-2023-6870 MEDIUM
4.3 Dec 19

Applications which spawn a Toast notification in a background thread may have obscured fullscreen notifications displaye

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CVE-2022-26485 vulnerability details – vuln.today

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