CVE-2025-1020

Memory safety bugs present in Firefox 134 and Thunderbird 134. 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 affects Firefox < 135 and Thunderbird < 135.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

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=1939063%2C1942169	Broken Link
https://www.mozilla.org/security/advisories/mfsa2025-07/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-11/	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2025-02-04 14:15

Updated : 2025-02-06 21:15

NVD link : CVE-2025-1020

Mitre link : CVE-2025-1020

CVE.ORG link : CVE-2025-1020

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-787

Out-of-bounds Write

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