Authentication modules in Netatalk 1.5.0 through 4.4.2 fail to check the return value of seteuid(), which may allow a remote authenticated attacker… (CVE-2026-44073)
Description
Netatalk versions 1.5.0 through 4.4.2 contain a vulnerability in their authentication modules where the return value of the seteuid() function is not checked. This flaw may allow a remote authenticated attacker to retain elevated privileges if an error occurs during the seteuid() call. The vulnerability has a medium severity rating with a CVSS score of 5.0.
CVSS v3.1
Score 5.0medium
Affected software
pkg:deb/ubuntu/netatalk?arch=source&distro=esm-infra-legacy/trustypkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps-legacy/xenialpkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/netatalk?arch=source&distro=esm-apps/noblepkg:deb/ubuntu/netatalk?arch=source&distro=questingpkg:deb/ubuntu/netatalk?arch=source&distro=stonkingpkg:deb/ubuntu/netatalk?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The authentication modules in Netatalk versions 1.5.0 through 4.4.2 fail to verify the success of the seteuid() system call. Because of this, a remote attacker who is already authenticated could exploit this failure to maintain elevated privileges under certain error conditions, potentially leading to limited confidentiality, integrity, and availability impacts.
Potential Impact
A remote authenticated attacker may retain elevated privileges due to the failure to check the return value of seteuid(). This could lead to limited confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:L/I:L/A:L). The attack complexity is high and requires low privileges with no user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to trusted users and monitor for unusual privilege escalations related to Netatalk authentication modules.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-44073
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:14.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:Pro:24.04:LTS","Ubuntu:25.10","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
Threat ID: 6ad3f6732cdf04f65666626f
Added to database: 10/17/2026, 22:28:03 UTC
Last enriched: 10/17/2026, 22:49:07 UTC
Last updated: 10/17/2026, 22:49:07 UTC
Views: 3
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