CVE-2025-1016: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7
Last updated 11 February 2025
Other sources
Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. 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.
— Mozilla
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2025-1016?
CVE-2025-1016 is considered a high-severity vulnerability due to its potential for memory corruption and arbitrary code execution.
How do I fix CVE-2025-1016?
To fix CVE-2025-1016, update affected software to the latest version: Thunderbird to 135 or 128.7, and Firefox or Firefox ESR to 135 or 115.20 respectively.
Which versions are affected by CVE-2025-1016?
CVE-2025-1016 affects Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6.
Can CVE-2025-1016 be exploited?
Yes, CVE-2025-1016 contains memory safety bugs that could potentially be exploited to run arbitrary code.
What software does CVE-2025-1016 impact?
CVE-2025-1016 impacts Mozilla's Thunderbird and Firefox products, along with their Extended Support Release (ESR) versions.