CVE-2026-16384: Vulnerability in Mozilla Firefox
CVE-2026-16384 is an information disclosure vulnerability in Mozilla Firefox's Graphics: WebGPU component caused by uninitialized memory. This flaw allows unauthorized disclosure of potentially sensitive information. The vulnerability was fixed in Firefox version 153 and Thunderbird version 153. It has a CVSS 3.1 base score of 7.5, indicating high severity. No known exploits in the wild have been reported. The issue affects Firefox versions prior to 153.
AI Analysis
Technical Summary
CVE-2026-16384 is an information disclosure vulnerability due to uninitialized memory in the Graphics: WebGPU component of Mozilla Firefox. This vulnerability allows an attacker to potentially access sensitive information from memory that was not properly initialized. The flaw was addressed and fixed in Firefox 153 and Thunderbird 153. The CVSS 3.1 vector indicates the vulnerability is remotely exploitable without privileges or user interaction, with high impact on confidentiality but no impact on integrity or availability. The vendor advisory confirms the fix and categorizes the impact as high.
Potential Impact
The vulnerability allows unauthorized disclosure of information from uninitialized memory in the WebGPU graphics component, potentially exposing sensitive data. The confidentiality impact is high, but there is no impact on integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153 and Thunderbird 153. Users and administrators should update to these versions or later to remediate the issue. Since this is a client application vulnerability, patching is the recommended and effective mitigation. No additional action is required beyond applying the official updates.
CVE-2026-16384: Vulnerability in Mozilla Firefox
Description
CVE-2026-16384 is an information disclosure vulnerability in Mozilla Firefox's Graphics: WebGPU component caused by uninitialized memory. This flaw allows unauthorized disclosure of potentially sensitive information. The vulnerability was fixed in Firefox version 153 and Thunderbird version 153. It has a CVSS 3.1 base score of 7.5, indicating high severity. No known exploits in the wild have been reported. The issue affects Firefox versions prior to 153.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16384 is an information disclosure vulnerability due to uninitialized memory in the Graphics: WebGPU component of Mozilla Firefox. This vulnerability allows an attacker to potentially access sensitive information from memory that was not properly initialized. The flaw was addressed and fixed in Firefox 153 and Thunderbird 153. The CVSS 3.1 vector indicates the vulnerability is remotely exploitable without privileges or user interaction, with high impact on confidentiality but no impact on integrity or availability. The vendor advisory confirms the fix and categorizes the impact as high.
Potential Impact
The vulnerability allows unauthorized disclosure of information from uninitialized memory in the WebGPU graphics component, potentially exposing sensitive data. The confidentiality impact is high, but there is no impact on integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153 and Thunderbird 153. Users and administrators should update to these versions or later to remediate the issue. Since this is a client application vulnerability, patching is the recommended and effective mitigation. No additional action is required beyond applying the official updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:56:57.902Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"}]
Threat ID: 6a5f6cbe2a4a8d59892625f9
Added to database: 07/21/2026, 12:57:34 UTC
Last enriched: 07/30/2026, 10:23:20 UTC
Last updated: 09/04/2026, 09:44:17 UTC
Views: 59
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