When String.toUpperCase() caused a string to get longer it was possible for uninitialized memory to be incorporated into the result string. This vulnerability was fixed in Firefox 136 and Thunderbird 136.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade firefox-esrUpgrade librewolfUpgrade thunderbirdUpgrade firefox | Apr 1, 2025 | Mar 30, 2025 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade www-client/firefox-bin. | May 13, 2025 | Mar 4, 2025 |
| Mfsa2025 14 | — | Upgrade to Mozilla Firefox version 136.0Upgrade to the latest version of Mozilla Firefox | Mar 5, 2025 | Mar 4, 2025 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 136.0Upgrade to the latest version of Mozilla Thunderbird | Mar 5, 2025 | Mar 4, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 4, 2025 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefox | Mar 10, 2025 | Mar 4, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub