# CVE-2022-22756: Mozilla Firefox ESR and 4 others: Improper Control of Generation of Code ('Code Injection') CVE-2022-22756 is fixed in 13 products on 2 platforms, first by Mozilla Firefox (en-US) 97.0, released February 8, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-22756 - Priority: High - CVSS: 9.6 (Important) - EPSS: 0.0096 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Feb 8, 2022 - Weakness: CWE-94: Improper Control of Generation of Code ('Code Injection') - Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2022-22756 ## Description If a user was convinced to drag and drop an image to their desktop or other folder, the resulting object could have been changed into an executable script which would have run arbitrary code after the user clicked on it. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Windows apps | Mozilla Firefox (en-US) | 97.0 | [Mozilla Firefox (en-US) 97.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox-97.0.md) | Feb 8, 2022 | | Windows apps | Mozilla Firefox ESR (en-US) | 102.0 | [Mozilla Firefox ESR (en-US) 102.0](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-102.0.md) | Jun 23, 2022 | | Windows apps | Mozilla Thunderbird (en-US) | 91.6.0 | [Mozilla Thunderbird (en-US) 91.6.0](https://patchblox.com/security/data/fix/windows-app/mozilla.thunderbird-91.6.0.md) | Feb 8, 2022 | | Linux | firefox RHEL 8 | 0:91.6.0-1.el8_5 | [RHSA-2022:0510](https://patchblox.com/security/data/fix/linux/rhsa-2022-0510.md) | Feb 14, 2022 | | Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 97.0+build2-0ubuntu0.18.04.1 | [firefox 97.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-97.0-build2-0ubuntu0.18.04.1.md) | Feb 8, 2022 | | Linux | firefox Ubuntu 20.04 LTS (focal) | 97.0+build2-0ubuntu0.20.04.1 | [firefox 97.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-97.0-build2-0ubuntu0.20.04.1.md) | Feb 8, 2022 | | Linux | firefox Ubuntu 22.04.1 LTS (jammy) | 97.0+build2-0ubuntu1 | [firefox 97.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-firefox-97.0-build2-0ubuntu1.md) | Feb 8, 2022 | | Linux | firefox almalinux 8 | 91.6.0-1.el8_5.alma | [ALSA-2022:0510](https://patchblox.com/security/data/fix/linux/alsa-2022-0510.md) | Feb 14, 2022 | | Linux | firefox ol 8 | 0:91.6.0-1.0.1.el8_5 | [ELSA-2022-0510](https://patchblox.com/security/data/fix/linux/elsa-2022-0510.md) | Feb 14, 2022 | | Linux | firefox rocky 8 | 0:91.6.0-1.el8_5 | [RLSA-2022:0510](https://patchblox.com/security/data/fix/linux/rlsa-2022-0510.md) | Feb 14, 2022 | | Linux | firefox-esr Debian 12.15 (bookworm) | 91.6.0esr-1 | [DEBIAN-CVE-2022-22756](https://patchblox.com/security/data/fix/linux/debian-cve-2022-22756.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 13.5 (trixie) | 91.6.0esr-1 | [DEBIAN-CVE-2022-22756](https://patchblox.com/security/data/fix/linux/debian-cve-2022-22756.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 14 | 91.6.0esr-1 | [DEBIAN-CVE-2022-22756](https://patchblox.com/security/data/fix/linux/debian-cve-2022-22756.md) | Dec 22, 2022 | | Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 97.0+build2-0ubuntu0.18.04.1 | [firefox-geckodriver 97.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-97.0-build2-0ubuntu0.18.04.1.md) | Feb 8, 2022 | | Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 97.0+build2-0ubuntu0.20.04.1 | [firefox-geckodriver 97.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-97.0-build2-0ubuntu0.20.04.1.md) | Feb 8, 2022 | | Linux | firefox-geckodriver Ubuntu 22.04.1 LTS (jammy) | 97.0+build2-0ubuntu1 | [firefox-geckodriver 97.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-firefox-geckodriver-97.0-build2-0ubuntu1.md) | Feb 8, 2022 | | Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 97.0+build2-0ubuntu0.18.04.1 | [firefox-mozsymbols 97.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-97.0-build2-0ubuntu0.18.04.1.md) | Feb 8, 2022 | | Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 97.0+build2-0ubuntu0.20.04.1 | [firefox-mozsymbols 97.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-97.0-build2-0ubuntu0.20.04.1.md) | Feb 8, 2022 | | Linux | firefox-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 97.0+build2-0ubuntu1 | [firefox-mozsymbols 97.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-firefox-mozsymbols-97.0-build2-0ubuntu1.md) | Feb 8, 2022 | | Linux | thunderbird Debian 12.15 (bookworm) | 1:91.6.0-1 | [DEBIAN-CVE-2022-22756](https://patchblox.com/security/data/fix/linux/debian-cve-2022-22756.md) | Dec 22, 2022 | | Linux | thunderbird Debian 13.5 (trixie) | 1:91.6.0-1 | [DEBIAN-CVE-2022-22756](https://patchblox.com/security/data/fix/linux/debian-cve-2022-22756.md) | Dec 22, 2022 | | Linux | thunderbird Debian 14 | 1:91.6.0-1 | [DEBIAN-CVE-2022-22756](https://patchblox.com/security/data/fix/linux/debian-cve-2022-22756.md) | Dec 22, 2022 | | Linux | thunderbird RHEL 8 | 0:91.6.0-1.el8_5 | [RHSA-2022:0535](https://patchblox.com/security/data/fix/linux/rhsa-2022-0535.md) | Feb 15, 2022 | | Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:91.7.0+build2-0ubuntu0.18.04.1 | [thunderbird 1:91.7.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-91.7.0-build2-0ubuntu0.18.04.1.md) | Mar 8, 2022 | | Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:91.7.0+build2-0ubuntu0.20.04.1 | [thunderbird 1:91.7.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-91.7.0-build2-0ubuntu0.20.04.1.md) | Mar 8, 2022 | | Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:91.6.1+build1-0ubuntu1 | [thunderbird 1:91.6.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-91.6.1-build1-0ubuntu1.md) | Feb 17, 2022 | | Linux | thunderbird almalinux 8 | 91.6.0-1.el8_5.alma | [ALSA-2022:0535](https://patchblox.com/security/data/fix/linux/alsa-2022-0535.md) | Feb 15, 2022 | | Linux | thunderbird ol 8 | 0:91.6.0-1.0.1.el8_5 | [ELSA-2022-0535](https://patchblox.com/security/data/fix/linux/elsa-2022-0535.md) | Feb 15, 2022 | | Linux | thunderbird rocky 8 | 0:91.6.0-1.el8_5 | [RLSA-2022:0535](https://patchblox.com/security/data/fix/linux/rlsa-2022-0535.md) | Feb 15, 2022 | | Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:91.7.0+build2-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:91.7.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-91.7.0-build2-0ubuntu0.18.04.1.md) | Mar 8, 2022 | | Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:91.7.0+build2-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:91.7.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-91.7.0-build2-0ubuntu0.20.04.1.md) | Mar 8, 2022 | | Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:91.6.1+build1-0ubuntu1 | [thunderbird-gnome-support 1:91.6.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-91.6.1-build1-0ubuntu1.md) | Feb 17, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:91.7.0+build2-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:91.7.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-91.7.0-build2-0ubuntu0.18.04.1.md) | Mar 8, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:91.7.0+build2-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:91.7.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-91.7.0-build2-0ubuntu0.20.04.1.md) | Mar 8, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:91.6.1+build1-0ubuntu1 | [thunderbird-mozsymbols 1:91.6.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-91.6.1-build1-0ubuntu1.md) | Feb 17, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:91.7.0+build2-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:91.7.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-91.7.0-build2-0ubuntu0.18.04.1.md) | Mar 8, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:91.7.0+build2-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:91.7.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-91.7.0-build2-0ubuntu0.20.04.1.md) | Mar 8, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:91.6.1+build1-0ubuntu1 | [xul-ext-calendar-timezones 1:91.6.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-91.6.1-build1-0ubuntu1.md) | Feb 17, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:91.7.0+build2-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:91.7.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-91.7.0-build2-0ubuntu0.18.04.1.md) | Mar 8, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:91.7.0+build2-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:91.7.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-91.7.0-build2-0ubuntu0.20.04.1.md) | Mar 8, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:91.6.1+build1-0ubuntu1 | [xul-ext-gdata-provider 1:91.6.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-91.6.1-build1-0ubuntu1.md) | Feb 17, 2022 | | Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:91.7.0+build2-0ubuntu0.18.04.1 | [xul-ext-lightning 1:91.7.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-91.7.0-build2-0ubuntu0.18.04.1.md) | Mar 8, 2022 | | Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:91.7.0+build2-0ubuntu0.20.04.1 | [xul-ext-lightning 1:91.7.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-91.7.0-build2-0ubuntu0.20.04.1.md) | Mar 8, 2022 | | Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:91.6.1+build1-0ubuntu1 | [xul-ext-lightning 1:91.6.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-91.6.1-build1-0ubuntu1.md) | Feb 17, 2022 | --- Data as of 2026-11-08T06:59:42Z UTC. 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