# SUSE-SU-2026:3221-1: MozillaFirefox security update

SUSE-SU-2026:3221-1, released July 23, 2026, fixes 3 CVEs in MozillaFirefox (version 140.13.0-150200.152.248.1). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/suse-su-2026-3221-1
- Platform: Linux
- Released: Jul 23, 2026
- Priority: Urgent (Closes CVE-2026-16361, rated Critical)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/SUSE-SU-2026:3221-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [MozillaFirefox](https://patchblox.com/security/data/product/linux/mozillafirefox.md) | sles 15.6 | 140.13.0-150200.152.248.1 |
| [MozillaFirefox](https://patchblox.com/security/data/product/linux/mozillafirefox.md) | sles 15.7 | 140.13.0-150200.152.248.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-16361](https://patchblox.com/security/data/cve/CVE-2026-16361.md) | Urgent | Memory safety bugs fixed in Thunderbird ESR 140.13 | 9.8 | 0.0032 |  |
| [CVE-2026-15718](https://patchblox.com/security/data/cve/CVE-2026-15718.md) | High | Invalid pointer in the JavaScript: WebAssembly component | 8.8 | 0.0049 |  |
| [CVE-2026-15719](https://patchblox.com/security/data/cve/CVE-2026-15719.md) | High | Site isolation issue in the DOM: Navigation component | 8.8 | 0.0034 |  |

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Data as of 2026-11-10T13:56:55Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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