CVE-2026-100805 - Vulnerability Details - OpenCVE

Description

Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 157.

Published: 2026-09-29

Score: 7.5 High

EPSS: n/a

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

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
`157`	unaffected	≤ *

No data.

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

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 total

References

Link	Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=2058785
https://www.mozilla.org/security/advisories/mfsa2026-97/

History

Tue, 29 Sep 2026 14:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-362 CWE-416
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

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

Type	Values Removed	Values Added
Description		Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 157.
Title		Race condition, use-after-free in the Audio/Video component
References		https://bugzilla.mozilla.org/show_bug.cgi?id=2058785 https://www.mozilla.org/security/advisories/mfsa2026-97/

Subscriptions

No data.

MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2026-09-29T12:36:21.316Z

Updated: 2026-09-29T14:09:38.184Z

Reserved: 2026-09-26T19:17:55.926Z

Link: CVE-2026-100805

Vulnrichment

Updated: 2026-09-29T14:09:28.551Z

NVD

Status : Received

Published: 2026-09-29T13:17:45.600

Modified: 2026-09-29T13:17:45.600

Link: CVE-2026-100805

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416
Use After Free

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