CVE-2026-44057: Netatalk dead bounds check in Spotlight RPC unmarshaller

CVE-2026-44057 · Severity: low · CVSS 3.1 · Published 2026-05-21

Netatalk is an open-source implementation of the Apple Filing Protocol (AFP) used to allow Unix-like systems to serve files to macOS clients. A flaw in the Spotlight search component contains ineffective security checks, which could theoretically allow a logged-in user to access limited information they shouldn't see. While the risk is considered low, it represents a failure in the software's internal defenses.

Technologies: Netatalk. Vendors: Netatalk.

Quick answers

Is CVE-2026-44057 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-44057 being exploited in the wild.
How severe is CVE-2026-44057?
Low severity, with a CVSS score of 3.1, published 21 May 2026.
Which products and versions are affected?
Netatalk 3.0.0 through 4.4.2.
Is there a fix for CVE-2026-44057?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-44057 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-44057?
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 vulnerability exists in the Spotlight RPC unmarshaller of Netatalk due to a dead bounds check (CWE-561). The root cause is a check on an unsigned value that results in an unreachable code path, rendering the defensive logic ineffective. A remote authenticated attacker with low privileges could potentially exploit this via crafted Spotlight RPC requests to obtain limited information. While the vendor notes this is not independently exploitable in a significant way, it serves as a defense-in-depth weakness. The issue is addressed in Netatalk version 4.4.3 or by applying the provided security patch.

Affected products

  • Netatalk Netatalk 3.0.0 through 4.4.2

Timeline

  • 2026-05-13: disclosed
  • 2026-05-21: advisory

References

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