Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

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.

The EPSS score is 0.00311.

Exploitation none

Automatable no

Technical Impact total

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
140.13 unaffected ≤ 140.*
153 unaffected ≤ *
Mozilla Thunderbird affected
Version Status Constraints
140.13 unaffected ≤ 140.*
153 unaffected ≤ *

No data.

No data.

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Vendors Products
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Firefox Subscribe

Project Subscriptions

Vendors Products
Mozilla Subscribe
Firefox Subscribe
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4695-1 firefox-esr security update
Debian DSA Debian DSA DSA-6394-1 firefox-esr security update
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=2043188 cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-16362 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-16362 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-68/ cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-70/ cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-70/#CVE-2026-16362 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-71/ cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-72/ cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-72/#CVE-2026-16362 cve-icon
History

Fri, 24 Jul 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-825
References
Metrics threat_severity

None

 threat_severity

Important

Wed, 22 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Description Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13. Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
References

Wed, 22 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/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'}

Wed, 22 Jul 2026 01:45:00 +0000

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

Tue, 21 Jul 2026 12:45:00 +0000

Type Values Removed Values Added
Description Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153 and Firefox ESR 140.13.
Title Use-after-free in the WebRTC: Audio/Video component
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-07-22T19:18:16.408Z

Reserved: 2026-07-20T21:56:10.605Z

Link: CVE-2026-16362

cve-icon Vulnrichment

Updated: 2026-07-22T15:49:55.384Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

Publid Date: 2026-07-21T12:37:33Z

Links: CVE-2026-16362 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-07-24T04:30:04Z

Weaknesses