Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
Metrics
Affected Vendors & Products
References
History
Tue, 16 Jun 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12. | Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12. |
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Tue, 16 Jun 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-119 | |
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cvssV3_1
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Tue, 16 Jun 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Mozilla
Mozilla firefox |
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| Vendors & Products |
Mozilla
Mozilla firefox |
Tue, 16 Jun 2026 13:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Memory safety bugs present in Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12. | |
| Title | Memory safety bugs fixed in Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152 | |
| References |
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Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2026-06-16T16:08:45.759Z
Reserved: 2026-06-15T15:08:22.115Z
Link: CVE-2026-12327
Updated: 2026-06-16T15:47:07.524Z
Status : Undergoing Analysis
Published: 2026-06-16T13:16:33.473
Modified: 2026-06-16T17:16:38.330
Link: CVE-2026-12327
No data.
OpenCVE Enrichment
Updated: 2026-06-16T14:45:15Z