CVE-2025-9181

Uninitialized memory in the JavaScript Engine component. This vulnerability was fixed in Firefox 142, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1977130	Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-64/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-66/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-67/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-70/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-71/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-72/	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html
https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird:::::-:::*
	cpe:2.3:a:mozilla:thunderbird:::::esr:::*

History

No history.

Information

Published : 2025-08-19 21:15

Updated : 2026-06-17 10:08

NVD link : CVE-2025-9181

Mitre link : CVE-2025-9181

CVE.ORG link : CVE-2025-9181

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-457

Use of Uninitialized Variable

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