Mend.io Vulnerability Database

What is a CVE vulnerability ID? icon What is a WS vulnerability ID? icon What is an MSC vulnerability ID? icon
New vulnerability? Tell us about it!
icon

We found results for “”

CVE-2025-1020

Date: February 4, 2025

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.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-1020
https://www.mozilla.org/security/advisories/mfsa2025-07/
https://www.mozilla.org/security/advisories/mfsa2025-11/
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1939063%2C1942169
https://www.mend.io/vulnerability-database/CVE-2025-1020

Severity Score

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

Do you need more information?

Contact Us