CVE-2026-12324: Vulnerability in Mozilla Firefox
CVE-2026-12324 is a vulnerability in Mozilla Firefox's Graphics: CanvasWebGL component caused by incorrect boundary conditions. This issue was fixed in Firefox 152 and Firefox ESR 140.12. The vulnerability has a CVSS score of 7.3, indicating high severity. It is part of a broader set of security fixes released in these versions addressing multiple memory safety and boundary condition issues. No known exploits are reported in the wild for this specific vulnerability.
AI Analysis
Technical Summary
CVE-2026-12324 involves incorrect boundary conditions in the Graphics: CanvasWebGL component of Mozilla Firefox. This vulnerability was addressed and fixed in Firefox 152 and Firefox ESR 140.12. The CVSS 3.1 base score is 7.3 with vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L, indicating it can be exploited remotely without privileges or user interaction, potentially leading to confidentiality, integrity, and availability impacts. The vendor advisory confirms the fix is included in Firefox 152 and ESR 140.12 releases. This vulnerability is one among many fixed in these versions, which collectively address various memory safety, sandbox escape, and boundary condition issues.
Potential Impact
The vulnerability allows remote attackers to potentially exploit incorrect boundary conditions in the CanvasWebGL graphics component, which could lead to information disclosure, integrity compromise, or denial of service. The CVSS score of 7.3 reflects a high impact with possible loss of confidentiality, integrity, and availability. However, no known exploits in the wild have been reported for this specific issue.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 152 and Firefox ESR 140.12. Users and administrators should update affected Firefox and Thunderbird installations to these versions or later to remediate the vulnerability. Since this is not a cloud service, patching the client software is required. There are no vendor advisories indicating that no action is required or that the issue is already mitigated without patching.
CVE-2026-12324: Vulnerability in Mozilla Firefox
Description
CVE-2026-12324 is a vulnerability in Mozilla Firefox's Graphics: CanvasWebGL component caused by incorrect boundary conditions. This issue was fixed in Firefox 152 and Firefox ESR 140.12. The vulnerability has a CVSS score of 7.3, indicating high severity. It is part of a broader set of security fixes released in these versions addressing multiple memory safety and boundary condition issues. No known exploits are reported in the wild for this specific vulnerability.
CVSS v3.1
Score 7.3high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12324 involves incorrect boundary conditions in the Graphics: CanvasWebGL component of Mozilla Firefox. This vulnerability was addressed and fixed in Firefox 152 and Firefox ESR 140.12. The CVSS 3.1 base score is 7.3 with vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L, indicating it can be exploited remotely without privileges or user interaction, potentially leading to confidentiality, integrity, and availability impacts. The vendor advisory confirms the fix is included in Firefox 152 and ESR 140.12 releases. This vulnerability is one among many fixed in these versions, which collectively address various memory safety, sandbox escape, and boundary condition issues.
Potential Impact
The vulnerability allows remote attackers to potentially exploit incorrect boundary conditions in the CanvasWebGL graphics component, which could lead to information disclosure, integrity compromise, or denial of service. The CVSS score of 7.3 reflects a high impact with possible loss of confidentiality, integrity, and availability. However, no known exploits in the wild have been reported for this specific issue.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 152 and Firefox ESR 140.12. Users and administrators should update affected Firefox and Thunderbird installations to these versions or later to remediate the vulnerability. Since this is not a cloud service, patching the client software is required. There are no vendor advisories indicating that no action is required or that the issue is already mitigated without patching.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-06-15T15:08:21.057Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-57/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-58/","vendor":"Mozilla"}]
Threat ID: 6a314c830b89be6888b4cdd6
Added to database: 06/16/2026, 13:15:47 UTC
Last enriched: 06/23/2026, 15:19:52 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 139
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