Is CVE-2026-44067 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-44067 being exploited in the wild.

How severe is CVE-2026-44067?

Medium severity, with a CVSS score of 4.2, published 21 May 2026.

Is there a fix for CVE-2026-44067?

A patch was published on 2026-05-21: Fixed in version 4.5.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-44067 attacked?

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

Am I affected by CVE-2026-44067?

Check whether you run Netatalk at an affected version. 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-2026-44067: Netatalk heap over-read in extended attribute header parsing

CVE-2026-44067 · Severity: medium · CVSS 4.2 · Published 2026-05-21

Netatalk is an open-source implementation of the Apple Filing Protocol (AFP) that allows Unix-like systems to serve files to macOS clients. A vulnerability in how it handles file metadata could allow an attacker with existing access to cause a system crash or read sensitive information from the server's memory. This issue is primarily a risk if the server's metadata files are modified by another process or user, potentially leading to service instability.

Technologies: Netatalk. Vendors: Netatalk.

Quick answers

Is CVE-2026-44067 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-44067 being exploited in the wild.
How severe is CVE-2026-44067?: Medium severity, with a CVSS score of 4.2, published 21 May 2026.
Which products and versions are affected?: Netatalk 2.1.0 through 4.4.2.
Is there a fix for CVE-2026-44067?: A patch was published on 2026-05-21: Fixed in version 4.5.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-44067 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-44067?: Check whether you run Netatalk at an affected version. 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 heap-based out-of-bounds read (CWE-125) exists in Netatalk's AppleDouble metadata parsing logic. The vulnerability occurs because the extended attribute header parsing routine trusts the on-disk entry count without validating it against the actual buffer size. An attacker with low privileges and the ability to influence metadata (e.g., via NFS, Samba, or local access) can trigger this over-read. While the risk of remote code execution is low, the flaw can be used to crash the service or leak memory contents. The issue is fixed in version 4.5.0.

Affected products

Netatalk Netatalk 2.1.0 through 4.4.2

Timeline

2026-05-13: disclosed: Initial disclosure date
2026-05-21: advisory: NVD publication date
2026-05-21: patched: Fixed in version 4.5.0

References

https://netatalk.io/security/CVE-2026-44067

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