# nagios4 security updates

Patch Radar has 21 security fixes for nagios4, closing 7 CVEs. The newest is DEBIAN-CVE-2026-48548 (4.5.12+ds-1), released August 28, 2026.

- Web page: https://patchblox.com/security/product/linux/nagios4
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [DEBIAN-CVE-2026-48548](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48548.md) | Aug 28, 2026 | Debian 14 4.5.12+ds-1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48548](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48548.md) | Aug 28, 2026 | Debian 12.15 (bookworm) 4.4.6-4+deb12u1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48548](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48548.md) | Aug 28, 2026 | Debian 13.5 (trixie) 4.4.6-4.1+deb13u1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48549](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48549.md) | Aug 26, 2026 | Debian 13.5 (trixie) 4.4.6-4.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48549](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48549.md) | Aug 26, 2026 | Debian 12.15 (bookworm) 4.4.6-4+deb12u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48549](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48549.md) | Aug 26, 2026 | Debian 14 4.5.14+ds-1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48554](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48554.md) | Aug 12, 2026 | Debian 13.5 (trixie) 4.4.6-4.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48554](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48554.md) | Aug 12, 2026 | Debian 12.15 (bookworm) 4.4.6-4+deb12u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48554](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48554.md) | Aug 12, 2026 | Debian 14 4.5.14+ds-1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48553](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48553.md) | Aug 12, 2026 | Debian 13.5 (trixie) 4.4.6-4.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48553](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48553.md) | Aug 12, 2026 | Debian 12.15 (bookworm) 4.4.6-4+deb12u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48553](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48553.md) | Aug 12, 2026 | Debian 14 4.5.14+ds-1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48550](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48550.md) | Aug 12, 2026 | Debian 13.5 (trixie) 4.4.6-4.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48550](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48550.md) | Aug 12, 2026 | Debian 12.15 (bookworm) 4.4.6-4+deb12u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48550](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48550.md) | Aug 12, 2026 | Debian 14 4.5.14+ds-1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48552](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48552.md) | Aug 12, 2026 | Debian 13.5 (trixie) 4.4.6-4.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48552](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48552.md) | Aug 12, 2026 | Debian 12.15 (bookworm) 4.4.6-4+deb12u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48552](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48552.md) | Aug 12, 2026 | Debian 14 4.5.14+ds-1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48551](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48551.md) | Aug 12, 2026 | Debian 13.5 (trixie) 4.4.6-4.1+deb13u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48551](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48551.md) | Aug 12, 2026 | Debian 12.15 (bookworm) 4.4.6-4+deb12u2 | Routine | 1 | 0 |
| [DEBIAN-CVE-2026-48551](https://patchblox.com/security/data/fix/linux/debian-cve-2026-48551.md) | Aug 12, 2026 | Debian 14 4.5.14+ds-1 | Routine | 1 | 0 |

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Data as of 2026-11-07T06:34:28Z 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