CVE-2023-25739

Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in <code>ScriptLoadContext</code>. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1811939	Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-06/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-07/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1811939	Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-06/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-07/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1811939	Issue Tracking Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

History

24 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Las solicitudes de carga de módulos que fallaron no se estaban verificando para determinar si habían sido canceladas o no, causando un uso después de liberación en ScriptLoadContext. Esta vulnerabilidad afecta a Firefox menor que 110, Thunderbird anterior a 102.8 y Firefox ESR anterior a 102.8.

Information

Published : 2023-06-02 17:15

Updated : 2026-10-24 13:10

NVD link : CVE-2023-25739

Mitre link : CVE-2023-25739

CVE.ORG link : CVE-2023-25739

JSON object : View

Products Affected

mozilla

firefox
firefox_esr
thunderbird

CWE

CWE-416

Use After Free

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