A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions.CreditsArjun Basnet from SecurinReferenceshttps://netatalk.io/security/CVE-2026-7837
