CVE-2026-44053

Publication date 21 May 2026

Last updated 9 June 2026

Ubuntu priority

Cvss 3 Severity Score

Description

Netatalk 1.5.0 through 4.2.2 uses a broken cryptographic algorithm in the DHCAST128 UAM, which allows a remote attacker to obtain authentication credentials or impersonate a user via cryptanalytic attack.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
netatalk	26.04 LTS resolute	Ignored
	25.10 questing	Ignored
	24.04 LTS noble	Ignored
	22.04 LTS jammy	Ignored
	20.04 LTS focal	Ignored
	18.04 LTS bionic	Ignored
	14.04 LTS trusty	Ignored

Notes

shishirsub10

The Netatalk team does not encourage proactively applying the patch to existing deployments because of the low practical exploitability.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
netatalk	Upstream: https://netatalk.io/security/CVE-2026-44053.patch

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.4 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	None

Scores

Parameter	Value
Base score	7.4 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N