Description
An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird < 78.9 and Firefox ESR < 78.9.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Thunderbird | unspecified – < 78.9 | 78.9 |
| Mozilla | Firefox ESR | unspecified – < 78.9 | 78.9 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 78.9.0esr-1 | — |
| Debian 14 | thunderbird | 1:78.9.0-1 | — |
| Debian 13 | firefox-esr | 78.9.0esr-1 | — |
| Debian 13 | thunderbird | 1:78.9.0-1 | — |
| Debian 12 | firefox-esr | 78.9.0esr-1 | — |
| Debian 12 | thunderbird | 1:78.9.0-1 | — |
| Debian 10 | firefox-esr | 78.9.0esr-1~deb10u1 | DSA-4874-1 |
| Debian 10 | thunderbird | 1:78.9.0-1~deb10u1 | DSA-4876-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | firefox | 78.9.0-1.el8_3 | RHSA-2021:0990 |
| RHEL 8 | thunderbird | 78.9.0-3.el8_3 | RHSA-2021:0993 |
| RHEL 7 | firefox | 78.9.0-1.el7_9 | RHSA-2021:0992 |
| RHEL 7 | thunderbird | 78.9.0-3.el7_9 | RHSA-2021:0996 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.2 EUS | firefox | 78.9.0-1.el8_2 | RHSA-2021:0989 |
| RHEL 8.2 EUS | thunderbird | 78.9.0-3.el8_2 | RHSA-2021:0994 |
| RHEL 8.1 EUS | firefox | 78.9.0-1.el8_1 | RHSA-2021:0991 |
| RHEL 8.1 EUS | thunderbird | 78.9.0-3.el8_1 | RHSA-2021:0995 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.7.1-1.amzn2.0.1 | ALAS2-2023-1951 |
Advisories 11
- RHSA-2021:0996 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2021:0992 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-4876-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4874-1 firefox-esr - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RHSA-2021:0995 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2021:0994 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2021:0993 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2021:0991 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2021:0989 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2021:0990 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- ALAS2-2023-1951 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jan 30, 2025