Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Mozilla Firefox affected
Version Status Constraints
115.42 unaffected ≤ 115.*
140.17 unaffected ≤ 140.*
153.4 unaffected ≤ 153.*
157 unaffected ≤ *

No data.

No data.

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Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2069804 cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-100/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-97/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-98/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-99/ cve-icon cve-icon
History

Wed, 30 Sep 2026 03:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-788

Tue, 29 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-457
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 29 Sep 2026 17:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-788

Tue, 29 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Description Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Title Uninitialized memory in the Audio/Video component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-09-29T16:30:01.160Z

Reserved: 2026-09-26T19:17:00.731Z

Link: CVE-2026-100783

cve-icon Vulnrichment

Updated: 2026-09-29T16:27:08.648Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T13:17:43.247

Modified: 2026-09-29T21:27:41.130

Link: CVE-2026-100783

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-30T03:00:07Z

Weaknesses