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PatchSiren cyber security CVE debrief

CVE-2026-44067 Netatalk CVE debrief

CVE-2026-44067 describes a heap over-read in Netatalk extended attribute (EA) header parsing. According to the published description, an authenticated remote attacker who can supply crafted EA data may be able to obtain limited information or cause a minor service disruption. The issue is rated CVSS 4.2 (MEDIUM) and was publicly published on 2026-05-21.

Vendor
Netatalk
Product
Unknown
CVSS
MEDIUM 4.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-21
Original CVE updated
2026-05-21
Advisory published
2026-05-21
Advisory updated
2026-05-21

Who should care

Organizations running Netatalk, especially systems that accept authenticated remote access and process extended attribute data. Administrators of file-sharing, storage, or interoperability services that expose Netatalk functionality should review their deployments.

Technical summary

The vulnerability is a heap over-read in EA header parsing. The NVD vector indicates network access, low attack complexity, low privileges required, no user interaction, and a confidentiality/availability impact at a limited level (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L). The published description states that affected versions are Netatalk 2.1.0 through 4.4.2. The primary impact is limited information disclosure, with possible minor service disruption; no integrity impact is indicated in the provided source material.

Defensive priority

Medium. The issue requires authenticated access and is not described as leading to code execution, but it can still expose limited data or disrupt service. Treat it as a timely patch-and-review item for any exposed Netatalk deployment.

Recommended defensive actions

  • Inventory Netatalk installations and confirm whether any instances fall within the affected version range (2.1.0 through 4.4.2).
  • Review the vendor advisory and apply the first fixed release recommended by Netatalk when available.
  • Restrict authenticated access to Netatalk services to only the users and networks that require it.
  • Monitor Netatalk-related logs and service health for unusual authentication attempts, EA parsing errors, or unexplained crashes/disruptions.
  • If immediate remediation is not possible, reduce exposure by limiting where crafted EA data can be submitted and by applying compensating access controls.

Evidence notes

The debrief is based only on the supplied CVE description, the NVD record metadata, and the Netatalk security reference URL provided in the source corpus. The vendor attribution in the prompt is low confidence and marked for review; the product name Netatalk is supported by the referenced vendor advisory URL and the CVE description. No fixed version was provided in the corpus, so remediation advice is limited to following the vendor advisory and upgrading to the first patched release.

Official resources

Publicly disclosed on 2026-05-21 in the CVE/NVD record and linked Netatalk security advisory.