CVE-2025-9185

Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1970154%2C1976782%2C1977166	Broken Link
https://www.mozilla.org/security/advisories/mfsa2025-64/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-65/	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: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-2025-9185

Mitre link : CVE-2025-9185

CVE.ORG link : CVE-2025-9185

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

NVD-CWE-noinfo CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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