# RHSA-2025:2899: thunderbird security update

RHSA-2025:2899, released March 17, 2025, fixes 4 CVEs in thunderbird (version 0:128.8.0-2.el9_5). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2025-2899
- Platform: Linux
- Released: Mar 17, 2025
- Priority: High (Closes CVE-2025-1937, high severity)
- CVEs: 4, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2025:2899

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [thunderbird](https://patchblox.com/security/data/product/linux/thunderbird.md) | RHEL 9 | 0:128.8.0-2.el9_5 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-1937](https://patchblox.com/security/data/cve/CVE-2025-1937.md) | High | Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 115.21, Firefox ESR 128.8, and Thunderbird 128.8 | 8.8 | 0.0056 |  |
| [CVE-2025-26696](https://patchblox.com/security/data/cve/CVE-2025-26696.md) | High | Crafted email message incorrectly shown as being encrypted | 7.0 | 0.0036 |  |
| [CVE-2025-1938](https://patchblox.com/security/data/cve/CVE-2025-1938.md) | High | Memory safety bugs fixed in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8 | 8.8 | 0.0034 |  |
| [CVE-2025-26695](https://patchblox.com/security/data/cve/CVE-2025-26695.md) | Routine | Downloading of OpenPGP keys from WKD used incorrect padding | 5.3 | 0.0016 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo