CVE Intelligence
Analysis AI-assisted

CVE-2026-44050: Netatalk CNID daemon heap buffer overflow in comm_rcv()

CVE-2026-44050 is a heap-based buffer overflow in the comm_rcv() function of the CNID daemon in Netatalk 2.0.0 through 4.4.2. The record describes a remote attacker with valid credentials who could execute arbitrary code with escalated privileges or cause a denial of service, and it carries a critical CVSS 3.1 score of 9.9. The record lists no fixed version, is not in CISA KEV, and shows no confirmed exploitation in the sources consulted.

Published Oct 13, 2026 · Updated Oct 13, 2026 · Ler em português

Overview

CVE-2026-44050 is a heap-based buffer overflow (CWE-122) in the comm_rcv() function of the CNID daemon in Netatalk. The record places the affected range at versions 2.0.0 through 4.4.2 and was published on 2026-05-21.

Impact

  • The description states that a remote authenticated attacker may execute arbitrary code with escalated privileges or cause a denial of service.
  • The CVSS 3.1 base score is 9.9 (critical) with vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
  • Reading the vector, the attack is network-reachable, low complexity, needs low privileges, requires no user interaction, changes scope, and has high impact on confidentiality, integrity and availability. This interpretation is our inference from the vector.
  • SSVC fields in the record show technical impact as total, automatable as no, and exploitation as none.

Affected products and versions

  • Product listed: Netatalk Netatalk.
  • Range listed: 2.0.0 through 4.4.2 inclusive.
  • The record does not provide a list of individual fixed builds, so whether all releases in the range are affected in every configuration is unknown.

Exploitation status

  • The CISA KEV entry is not listed in the record (listed: false).
  • No confirmed exploitation appears in the sources consulted.
  • The record gives an EPSS probability of 0.00736 and a percentile of 0.5328. These are probabilistic indicators and do not confirm attacks.

Remediation and mitigation

  • The record contains no fixed version. Check the vendor advisory at the Netatalk site for the current guidance and apply any update the vendor publishes.
  • Until a fix is confirmed, reduce exposure: limit network access to the file sharing service to trusted hosts, review which accounts can authenticate, and remove unused accounts.
  • Inference: a version newer than 4.4.2 may contain the fix, but the record does not confirm this.

Detection guidance

  • Monitor the CNID daemon for unexpected crashes, restarts or resource exhaustion, which could indicate attempted exploitation or denial of service.
  • Review authentication logs for unusual logins to the file sharing service, particularly from unexpected sources.
  • Keep logs of the daemon and the host so that suspicious activity can be investigated after the fact.

Limitations of the available information

  • The record has no fixed version, no vendor-supplied technical details beyond the advisory link, and no exploitation evidence.
  • The source status is marked Deferred in the record, so the assessment may change as more information becomes available.
  • The EPSS date in the record is later than the publication date; we report it as given without further interpretation.
  • Specific exploitation conditions, required privileges beyond authentication, and default configurations are not described in the record.

Frequently asked questions

What is CVE-2026-44050?

It is a heap-based buffer overflow in the comm_rcv() function of the CNID daemon in Netatalk, affecting versions 2.0.0 through 4.4.2 according to the record.

Is this vulnerability being actively exploited?

The record shows it is not listed in CISA KEV, and no confirmed exploitation appears in the sources consulted.

Is there a fixed version?

The record does not list any fixed version. Check the vendor advisory for current guidance.

This analysis was drafted with AI assistance from verified source data and automatically checked against it.