# CVE-2026-44055: netatalk: A logic error involving bitwise OR operations in Netatalk 3.1.4 through 4.4.2 allows a remote authenticated attacker...

CVE-2026-44055 is fixed in 17 products on 1 platform, first by a2boot 4.2.3~ds-2.1ubuntu0.1, released May 21, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-44055
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0036
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 21, 2026

## Description

A logic error involving bitwise OR operations in Netatalk 3.1.4 through 4.4.2 allows a remote authenticated attacker to inject OS commands and execute arbitrary code.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | a2boot Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [a2boot 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-a2boot-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | atalkd Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [atalkd 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-atalkd-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | libatalk Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [libatalk 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libatalk-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | macipgw Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [macipgw 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-macipgw-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | netatalk Debian 13.5 (trixie) | 4.2.3~ds-1+deb13u2 | [DEBIAN-CVE-2026-44055](https://patchblox.com/security/data/fix/linux/debian-cve-2026-44055.md) | May 27, 2026 |
| Linux | netatalk Debian 14 | 4.4.3~ds-1 | [DEBIAN-CVE-2026-44055](https://patchblox.com/security/data/fix/linux/debian-cve-2026-44055.md) | May 27, 2026 |
| Linux | netatalk Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [netatalk 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-netatalk-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | netatalk-afptest Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-afptest-debuginfo Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-appletalk Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-appletalk-debuginfo Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-debuginfo Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-debugsource Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-devel Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-doc Fedora 43 | 5:4.4.3-1.fc43 | [FEDORA-2026-9FD50B2FF1](https://patchblox.com/security/data/fix/linux/fedora-2026-9fd50b2ff1.md) | May 22, 2026 |
| Linux | netatalk-tests Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [netatalk-tests 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-netatalk-tests-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | netatalk-tools Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [netatalk-tools 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-netatalk-tools-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | papd Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [papd 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-papd-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |
| Linux | timelord Ubuntu 26.04.1 LTS (resolute) | 4.2.3~ds-2.1ubuntu0.1 | [timelord 4.2.3~ds-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-timelord-4.2.3-ds-2.1ubuntu0.1.md) | May 21, 2026 |

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Data as of 2026-11-08T13:06:02Z 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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