Memory safety bug present in Firefox ESR 128.9, and Thunderbird 128.9. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox ESR 128.10 and Thunderbird 128.10.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade firefox-x11Upgrade thunderbirdUpgrade firefox | May 13, 2025 | Apr 29, 2025 |
| Amazon Linux Ami 2 | — | Upgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debuginfoUpgrade firefox-debuginfo | May 30, 2025 | Apr 29, 2025 |
| Amazon_linux_2023 | — | Upgrade firefoxUpgrade firefox-debuginfoUpgrade firefox-debugsource | Jun 3, 2025 | Apr 29, 2025 |
| Debian | — | Upgrade firefox-esrUpgrade thunderbird | May 2, 2025 | Apr 29, 2025 |
| Freebsd | — | Upgrade firefox-esrUpgrade thunderbird | May 15, 2025 | May 14, 2025 |
| Mfsa2025 29 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 128.10 | Apr 30, 2025 | Apr 29, 2025 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 128.10 | Apr 30, 2025 | Apr 29, 2025 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-x11 | May 6, 2025 | Apr 29, 2025 |
| Redhat_linux | — | Upgrade thunderbirdUpgrade thunderbird-debugsourceUpgrade firefox-debuginfoUpgrade firefoxUpgrade firefox-debugsourceUpgrade thunderbird-debuginfoNo solution existsUpgrade firefox-x11 | May 6, 2025 | Apr 29, 2025 |
| Rocky_linux | — | Upgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade thunderbird-debugsourceUpgrade firefox-x11Upgrade firefoxUpgrade firefox-debugsource | Jul 31, 2025 | Jul 29, 2025 |
| Suse | — | Upgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-translations-commonUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade mozillafirefox-branding-upstreamUpgrade MozillaFirefox | May 5, 2025 | Apr 29, 2025 |
| Ubuntu | — | Upgrade thunderbird | Jul 23, 2025 | Apr 29, 2025 |
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