Description
When downloading files through the Save As dialog on Windows with suggested filenames containing environment variable names, Windows would have resolved those in the context of the current user. <br>*This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.*. This vulnerability affects Firefox < 111, Firefox ESR < 102.9, and Thunderbird < 102.9.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 111 | 111 |
| Mozilla | Firefox ESR | unspecified – < 102.9 | 102.9 |
| Mozilla | Thunderbird | unspecified – < 102.9 | 102.9 |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP4 | MozillaThunderbird | 102.9.1-150200.8.110.2 | SUSE-SU-2023:1736-1 |
| SLES 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SLES 12 SP5 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES 12 SP2 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLES for SAP 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLES for SAP 12 SP4 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SLE Real Time 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SLE HPC 15 SP1 | MozillaFirefox | 102.9.0-150000.150.79.1 | SUSE-SU-2023:0728-1 |
| SUSE OpenStack Cloud Crowbar 9 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SUSE OpenStack Cloud 9 | MozillaFirefox | 102.9.0-112.153.1 | SUSE-SU-2023:0763-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| SUSE Enterprise Storage 7 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 111.0.1-1.1 | openSUSE-SU-2024:12839-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 102.9.0-1.1 | openSUSE-SU-2024:12791-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 15.4 | MozillaFirefox | 102.9.0-150200.152.81.1 | SUSE-SU-2023:0835-1 |
| openSUSE Leap 15.4 | MozillaThunderbird | 102.9.1-150200.8.110.2 | SUSE-SU-2023:1736-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.23 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.22 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.21 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.20 | firefox-esr | 102.9.0-r0 | — |
| Alpine v3.19 | firefox-esr | 102.9.0-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.18 | firefox-esr | 102.9.0-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 102.9.0-1.amzn2.0.1 | ALAS2-2023-1988 |
Advisories 12
- openSUSE-SU-2024:12839-1 MozillaFirefox-111.0.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12791-1 MozillaThunderbird-102.9.0-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0835-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0728-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1736-1 Security update for MozillaThunderbird SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-1424 Xerox FreeFlow Print Server für Solaris: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2025
- SUSE-SU-2023:0763-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-0643 Mozilla Firefox: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023
- WID-SEC-2023-0941 Mozilla Firefox und Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023
- WID-SEC-2023-0673 Mozilla Thunderbird: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 29, 2023
- ALAS2-2023-1988 Important: thunderbird security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 21, 2023