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PatchSiren cyber security CVE debrief

CVE-2026-44051 Netatalk CVE debrief

CVE-2026-44051 is a high-severity improper link resolution issue reported for Netatalk 3.0.2 through 4.4.2. According to the official NVD entry and the Netatalk security advisory, a remote authenticated attacker may be able to create attacker-controlled symlinks that lead to arbitrary file read or arbitrary file overwrite outcomes. The issue is categorized as CWE-59 and carries a CVSS v3.1 score of 8.1 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

Vendor
Netatalk
Product
Unknown
CVSS
HIGH 8.1
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

Administrators and security teams running Netatalk in environments that allow remote authenticated access should prioritize this issue, especially where file integrity and data confidentiality are important. It is also relevant to teams that expose Netatalk-backed shares to users, contractors, or other non-trusted authenticated accounts.

Technical summary

The vulnerability is an improper link resolution flaw. The supplied source material indicates that Netatalk versions 3.0.2 through 4.4.2 can be abused by a remote authenticated attacker to create symlinks under attacker control, which can then be used to read arbitrary files or overwrite arbitrary files. The NVD entry maps the issue to CWE-59 and assigns CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Defensive priority

High. The combination of remote reachability, low attack complexity, and high confidentiality/integrity impact makes this worth prompt remediation in any exposed Netatalk deployment.

Recommended defensive actions

  • Identify all Netatalk installations and confirm whether any are within the affected version range 3.0.2 through 4.4.2.
  • Prioritize upgrading to a vendor-fixed version or applying the mitigation guidance published in the official Netatalk advisory.
  • Review access controls for authenticated users who can interact with Netatalk-backed shares and limit exposure to only necessary accounts.
  • Monitor for unusual symlink creation, unexpected file reads, and unexpected file modifications in directories managed by Netatalk.
  • Validate backup and recovery coverage for any data stored on affected shares in case file integrity is impacted.

Evidence notes

The debrief is based only on the supplied NVD record and the linked Netatalk advisory. NVD lists the CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N and CWE-59. The official advisory reference points to netatalk.io/security/CVE-2026-44051, and the supplied description states affected versions are Netatalk 3.0.2 through 4.4.2.

Official resources

The vendor/product attribution in the supplied metadata is marked low confidence and needs review; however, the official reference points to Netatalk, and the technical description is taken from the supplied NVD and advisory sources only.