Is CVE-2026-44048 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-44048 being exploited in the wild.

How severe is CVE-2026-44048?

High severity, with a CVSS score of 8.8, published 21 May 2026.

Which products and versions are affected?

Netatalk Team Netatalk 2.0.4 through 4.4.2.

Is there a fix for CVE-2026-44048?

A patch was published on 2026-05-21: Fixed in version 4.4.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-44048 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-44048?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-44048: Netatalk stack buffer overflow in convert_charset

CVE-2026-44048 · Severity: high · CVSS 8.8 · Published 2026-05-21

Netatalk is an open-source implementation of the Apple Filing Protocol (AFP), which allows Unix-like systems to serve files to macOS clients. A security flaw in how the software handles file names can allow a logged-in user to crash the file server or potentially gain unauthorized control over the system. This could lead to a disruption of file-sharing services or the exposure of sensitive data stored on the server.

Quick answers

Is CVE-2026-44048 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-44048 being exploited in the wild.
How severe is CVE-2026-44048?: High severity, with a CVSS score of 8.8, published 21 May 2026.
Which products and versions are affected?: Netatalk Team Netatalk 2.0.4 through 4.4.2.
Is there a fix for CVE-2026-44048?: A patch was published on 2026-05-21: Fixed in version 4.4.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-44048 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-44048?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in Netatalk's 'convert_charset()' function, specifically during Unicode filename conversion. The vulnerability is caused by a type confusion issue involving UCS-2 character sequences where null terminators can be written at twice the intended byte offset when processing decomposing character sequences. This memory corruption can be triggered by an authenticated client over the network. While the most immediate impact is a process crash (DoS), the nature of the stack overflow suggests that arbitrary code execution or broader memory corruption may be possible. The issue is resolved in version 4.4.3.

Affected products

Netatalk Team Netatalk 2.0.4 through 4.4.2

Timeline

2026-05-13: disclosed: Initial disclosure date reported by vendor
2026-05-21: advisory: NVD publication date
2026-05-21: patched: Fixed in version 4.4.3

References

https://netatalk.io/security/CVE-2026-44048

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