Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS Details
- CVSS 3.1 Base Score: 7.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird | Apr 29, 2026 | Apr 27, 2026 |
| Amazon Linux Ami 2 | — | Upgrade firefoxUpgrade thunderbird | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsource | May 19, 2026 | Apr 21, 2026 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Apr 23, 2026 | Apr 23, 2026 |
| Freebsd | — | Upgrade firefoxUpgrade firefox-esrUpgrade thunderbird | Apr 30, 2026 | Apr 28, 2026 |
| Mfsa2026 30 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 150.0 | Apr 23, 2026 | Apr 21, 2026 |
| Mfsa2026 32 | — | Upgrade to Mozilla Firefox ESR version 140.10Upgrade to the latest version of Mozilla Firefox | Apr 23, 2026 | Apr 21, 2026 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 140.10Upgrade to the latest version of Mozilla Thunderbird | Apr 23, 2026 | Apr 21, 2026 |
| Oracle_linux | — | Upgrade firefoxUpgrade thunderbirdUpgrade firefox-x11 | Apr 29, 2026 | Apr 21, 2026 |
| Redhat_linux | — | Upgrade thunderbird-debugsourceUpgrade firefox-debugsourceUpgrade thunderbirdUpgrade firefoxUpgrade firefox-x11Upgrade firefox-debuginfoUpgrade thunderbird-debuginfoNo solution exists | Apr 29, 2026 | Apr 21, 2026 |
| Rocky_linux | — | Upgrade thunderbird-debugsourceUpgrade thunderbird-debuginfoUpgrade firefox-x11Upgrade firefox-debugsourceUpgrade firefoxUpgrade firefox-debuginfoUpgrade thunderbird | May 4, 2026 | Apr 28, 2026 |
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