PatchSiren cyber security CVE debrief
CVE-2026-12292 Mozilla CVE debrief
CVE-2026-12292 is a vulnerability caused by incorrect boundary conditions in the Web Audio component. It was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-12292) and modified on [cveModifiedAt]. The vulnerability was fixed in Firefox 152 and Firefox ESR 140.12. For more information, refer to [ref-5](https://www.mozilla.org/security/advisories/mfsa2026-57/) and [ref-6](https://www.mozilla.org/security/advisories/mfsa2026-58/).
- Vendor
- Mozilla
- Product
- Firefox
- CVSS
- Unknown
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-16
- Original CVE updated
- 2026-06-16
- Advisory published
- 2026-06-16
- Advisory updated
- 2026-06-16
Who should care
Users of Firefox and Firefox ESR should update to version 152 and 140.12 respectively to patch this vulnerability.
Technical summary
The Web Audio component has a vulnerability due to incorrect boundary conditions. This could potentially allow an attacker to execute arbitrary code or cause a denial of service.
Defensive priority
High
Recommended defensive actions
- Update Firefox to version 152 or later
- Update Firefox ESR to version 140.12 or later
Evidence notes
The CVE was published by the CVE Numbering Authority and details were obtained from the National Vulnerability Database and Mozilla's security advisories.
Official resources
CVE-2026-12292 was published on 2026-06-16T13:16:29.457Z.