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Netatalk CVE-2026-44067

| EUVDEUVD-2026-31214 MEDIUM
Out-of-bounds Read (CWE-125)
2026-05-21 securin GHSA-cwgp-4xrf-xr6q
4.2
CVSS 3.1 · Vendor: securin
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Severity by source

Vendor (securin) PRIMARY
4.2 MEDIUM
AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
SUSE
MEDIUM
qualitative

Primary rating from Vendor (securin).

CVSS VectorVendor: securin

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

Lifecycle Timeline

3
Severity Changed
May 21, 2026 - 08:22 NVD
LOW MEDIUM
CVSS changed
May 21, 2026 - 08:22 NVD
3.7 (LOW) 4.2 (MEDIUM)
Analysis Generated
May 21, 2026 - 08:06 vuln.today

DescriptionCVE.org

In Netatalk 2.1.0 through 4.4.2, ea header parsing heap over-read. Fixed in 4.5.0.

AnalysisAI

Heap over-read in Netatalk's extended attribute (EA) header parser affects all releases from 2.1.0 through 4.4.2, allowing authenticated remote attackers to read beyond allocated heap boundaries under high-complexity conditions. The impact is limited to partial memory disclosure (C:L) and minor availability degradation (A:L) with no integrity impact, consistent with a read-only out-of-bounds primitive. No public exploit code exists and no active exploitation has been identified; vendor-released fix 4.5.0 is available.

Technical ContextAI

Netatalk is an open-source implementation of the Apple Filing Protocol (AFP), enabling Unix-like systems to serve files to macOS clients. Its extended attribute (EA) handling carries HFS+/AFP metadata such as resource forks and Finder info. CWE-125 (Out-of-bounds Read) identifies the root cause: the EA header parser reads past the end of an allocated heap buffer, exposing adjacent heap memory. Despite the 'Buffer Overflow' tag applied by the reporting source (Securin), the CWE and description confirm this is a read-only over-read - no write primitive is indicated, which substantially constrains exploitability. The affected CPE is cpe:2.3:a:netatalk:netatalk:*:*:*:*:*:*:*:* covering the entire 2.1.0-4.4.2 release series across all platforms.

RemediationAI

Upgrade Netatalk to version 4.5.0, the vendor-released patch that resolves the EA header heap over-read; this is confirmed by both the CVE description and the vendor advisory at https://netatalk.io/security/CVE-2026-44067. If an immediate upgrade is not operationally feasible, apply the following specific compensating controls with noted trade-offs: restrict access to AFP port 548 via host-based or network firewall rules to limit exposure to trusted networks only (trade-off: disrupts legitimate remote AFP clients outside the allowed range); enforce strong authentication and limit AFP user accounts to the minimum required set, reducing the pool of potential authenticated attackers (trade-off: administrative overhead); and consider disabling extended attribute support in Netatalk configuration if EA functionality is not operationally required (trade-off: may break resource fork or Finder metadata handling for macOS clients). None of these compensating controls eliminate the vulnerability - they reduce attack surface while a patch cycle is completed.

CVE-2018-1160 CRITICAL POC
9.8 Dec 20

Netatalk before 3.1.12 is vulnerable to an out of bounds write in dsi_opensess.c. Rated critical severity (CVSS 9.8), th

CVE-2022-45188 HIGH POC
7.8 Nov 12

Netatalk through 3.1.13 has an afp_getappl heap-based buffer overflow resulting in code execution via a crafted .appl fi

CVE-2026-44050 CRITICAL
9.9 May 21

Heap buffer overflow in the Netatalk cnid_metad daemon's comm_rcv() function allows remote attackers with low-level priv

CVE-2023-42464 CRITICAL
9.8 Sep 20

A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17. Rated c

CVE-2022-22995 CRITICAL
9.8 Mar 25

The combination of primitives offered by SMB and AFP in their default configuration allows the arbitrary writing of file

CVE-2026-44048 HIGH
8.8 May 21

Stack-based buffer overflow in Netatalk versions 2.0.4 through 4.4.2 allows authenticated remote attackers to corrupt me

CVE-2026-44047 HIGH
8.8 May 21

SQL injection in Netatalk 3.1.0 through 4.4.2 allows authenticated remote attackers to compromise the MySQL-backed CNID

CVE-2021-31439 HIGH
8.8 May 21

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Synology Dis

CVE-2026-44051 HIGH
8.1 May 21

Arbitrary file read in Netatalk 3.0.2 through 4.4.2 allows authenticated remote attackers to create attacker-controlled

CVE-2026-44068 HIGH
7.6 May 21

Path traversal via extended attribute (ea) handling in Netatalk 2.1.0 through 4.4.2 allows authenticated remote attacker

CVE-2026-44055 HIGH
7.5 May 21

Shell injection in Netatalk 3.1.4 through 4.4.2 allows authenticated remote attackers to execute arbitrary OS commands t

CVE-2026-44062 HIGH
7.5 May 21

Out-of-bounds write in Netatalk versions 2.0.4 through 4.4.2 stems from a missing o_len bounds check in the pull_charset

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Server 12 SP5 Fixed
SUSE Linux Enterprise Server 12 SP5-LTSS Fixed
SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security Fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP5 Fixed
SUSE Linux Enterprise Desktop 12 Fixed

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CVE-2026-44067 vulnerability details – vuln.today

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