# RHSA-2025:8196: thunderbird security update

RHSA-2025:8196, released May 14, 2025, fixes 3 CVEs in thunderbird (version 128.10.1-1.el10_0). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2025-8196
- Platform: Linux
- Released: May 14, 2025
- Priority: High (Closes CVE-2025-3909, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2025:8196

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [thunderbird](https://patchblox.com/security/data/product/linux/thunderbird.md) | RHEL 10 | 128.10.1-1.el10_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-3909](https://patchblox.com/security/data/cve/CVE-2025-3909.md) | High | JavaScript Execution via Spoofed PDF Attachment and file:/// Link | 8.8 | 0.0047 |  |
| [CVE-2025-3875](https://patchblox.com/security/data/cve/CVE-2025-3875.md) | High | Sender Spoofing via Malformed From Header in Thunderbird | 8.8 | 0.0040 |  |
| [CVE-2025-3932](https://patchblox.com/security/data/cve/CVE-2025-3932.md) | High | Tracking Links in Attachments Bypassed Remote Content Blocking | 8.8 | 0.0039 |  |

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Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo