CVE-2026-44053 Netatalk CVE debrief

Who should care

Administrators and security teams running Netatalk, especially environments that still support or expose DHCAST128-based authentication. Systems that provide AFP access to untrusted or broad network segments should treat this as an authentication-compromise risk.

Technical summary

The weakness is recorded with CWE-327 (Use of a Broken or Risky Cryptographic Algorithm). NVD’s vector is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N, indicating a remotely reachable issue with no privileges or user interaction required, but with higher attack complexity. The impact is confidentiality and integrity loss: an attacker may recover credentials or impersonate a legitimate user. The supplied corpus does not include a fixed-version announcement, so remediation details should be confirmed in the vendor advisory linked from NVD.

Defensive priority

High. This is an authentication-path weakness that can lead to account compromise or impersonation, so exposure of Netatalk services should be reviewed promptly even though the attack complexity is rated high.

Recommended defensive actions

• Identify whether Netatalk 1.5.0 through 4.2.2 is deployed anywhere in your environment.
• Review whether DHCAST128 UAM is enabled or reachable, and disable it if operationally possible.
• Restrict AFP/Netatalk access to trusted networks and hosts until remediation is confirmed.
• Apply the vendor’s corrective guidance or upgrade to a fixed release once validated from the official Netatalk security advisory.
• Treat exposed credentials or impersonated accounts as potential compromise candidates and consider password resets or credential rotation for affected users.
• Monitor authentication logs for unusual login patterns, failed handshakes, or unexpected account use tied to Netatalk access.
• Prefer stronger, modern authentication mechanisms where available and phase out legacy cryptographic authentication methods.

Evidence notes

All factual claims are limited to the supplied CVE/NVD corpus: affected product Netatalk, impacted versions 1.5.0 through 4.2.2, broken cryptographic algorithm in DHCAST128 UAM, remote credential disclosure/impersonation impact, CWE-327, and CVSS 7.4 with vector AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N. NVD lists a reference to the Netatalk security advisory URL, but no advisory body text was provided in the corpus, so no fixed-version claim is made here.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.