CVE-2026-12324: Vulnerability in Mozilla Firefox
CVE-2026-12324 is a low impact vulnerability in Mozilla Firefox involving incorrect boundary conditions in the Graphics: CanvasWebGL component. This issue was addressed and fixed in Firefox 152 and Firefox ESR 140.12. The vulnerability is part of a broader set of security fixes released by Mozilla on June 16, 2026, covering multiple components with varying impact levels. No known exploits in the wild have been reported for this specific vulnerability.
AI Analysis
Technical Summary
CVE-2026-12324 describes a vulnerability due to incorrect boundary conditions in the Graphics: CanvasWebGL component of Mozilla Firefox. This flaw was fixed in Firefox 152 and Firefox ESR 140.12 as part of Mozilla's security advisories MFSA 2026-57 and MFSA 2026-58. The vulnerability is classified with low impact relative to other concurrent fixes addressing high and moderate impact issues in Firefox and Firefox ESR. The vendor advisories confirm the fix availability and no indication of active exploitation is present.
Potential Impact
The vulnerability could potentially lead to unexpected behavior in the CanvasWebGL graphics component due to improper boundary checks. However, the impact is rated low by Mozilla, indicating limited risk or exploitability compared to other vulnerabilities fixed in the same release cycle. There are no reports of exploitation in the wild for this issue.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 152 and Firefox ESR 140.12. Users and administrators should update to these versions or later to remediate the issue. Since the vulnerability is fixed in these releases, no additional mitigation actions are required beyond applying the official updates.
CVE-2026-12324: Vulnerability in Mozilla Firefox
Description
CVE-2026-12324 is a low impact vulnerability in Mozilla Firefox involving incorrect boundary conditions in the Graphics: CanvasWebGL component. This issue was addressed and fixed in Firefox 152 and Firefox ESR 140.12. The vulnerability is part of a broader set of security fixes released by Mozilla on June 16, 2026, covering multiple components with varying impact levels. No known exploits in the wild have been reported for this specific vulnerability.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12324 describes a vulnerability due to incorrect boundary conditions in the Graphics: CanvasWebGL component of Mozilla Firefox. This flaw was fixed in Firefox 152 and Firefox ESR 140.12 as part of Mozilla's security advisories MFSA 2026-57 and MFSA 2026-58. The vulnerability is classified with low impact relative to other concurrent fixes addressing high and moderate impact issues in Firefox and Firefox ESR. The vendor advisories confirm the fix availability and no indication of active exploitation is present.
Potential Impact
The vulnerability could potentially lead to unexpected behavior in the CanvasWebGL graphics component due to improper boundary checks. However, the impact is rated low by Mozilla, indicating limited risk or exploitability compared to other vulnerabilities fixed in the same release cycle. There are no reports of exploitation in the wild for this issue.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 152 and Firefox ESR 140.12. Users and administrators should update to these versions or later to remediate the issue. Since the vulnerability is fixed in these releases, no additional mitigation actions are required beyond applying the official updates.
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: 6/16/2026, 1:15:47 PM
Last enriched: 6/16/2026, 1:31:51 PM
Last updated: 6/16/2026, 5:40:18 PM
Views: 3
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