CVE-2025-0247
Published: 07 January 2025
Description
Memory safety bugs present in Firefox 133 and Thunderbird 133. 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 134 and Thunderbird 134.
Security Summary
CVE-2025-0247 encompasses multiple memory safety bugs present in Firefox 133 and Thunderbird 133. These bugs, associated with CWE-787 (Out-of-bounds Write), demonstrated evidence of memory corruption, and Mozilla presumes that with sufficient effort, some could be exploited to run arbitrary code. The vulnerability received a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical.
Remote attackers can exploit these bugs over the network with low attack complexity, requiring no privileges, authentication, or user interaction. Successful exploitation could result in high impacts to confidentiality, integrity, and availability, potentially allowing arbitrary code execution on affected systems.
Mozilla addressed CVE-2025-0247 in Firefox 134 and Thunderbird 134. For mitigation details, refer to Mozilla Security Advisories MFSA 2025-01 and MFSA 2025-04, along with the Bugzilla entries at https://bugzilla.mozilla.org/buglist.cgi?bug_id=1835193%2C1910021%2C1919803%2C1931576%2C1931948%2C1932173.
Details
- CWE(s)