PT-2026-42442 · Netatalk · Netatalk

Arjun Basnet · CVE-2026-7837 · Published 2026-05-21 · Updated 2026-05-21

Positive Technologies (AI Summary)

CVSS v3.1

3.7

Low

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Netatalk versions 3.0.0 through 4.4.2

Description A time-of-check time-of-use (TOCTOU) condition—a race condition where a system checks a condition and then uses the result of that check, but the condition changes between the two steps—exists in the ad flush() function. This issue involves root-privileged file operations, which could allow a remote attacker to cause limited data modification.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2026-7837

Affected Products

Netatalk

References · 9

• https://netatalk.io/security/CVE-2026-7837 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-7837 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-7837 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-7837 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-7837 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-7837 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-7837 · Security Note
• https://twitter.com/CVEnew/status/2057407750284439561 · Twitter Post
• https://t.me/CVEtracker/54482 · Telegram Post