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Description

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.

PUBLISHED Reserved 2026-05-05 | Published 2026-05-21 | Updated 2026-05-21 | Assigner securin




LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

Time-of-check Time-of-use (TOCTOU) Race Condition

Product status

Default status
unaffected

3.0.0 (semver)
affected

4.5.0 (semver)
unaffected

Credits

Arjun Basnet from Securin finder

References

netatalk.io/security/CVE-2026-7837 (Netatalk Security Advisory CVE-2026-7837) vendor-advisory

cve.org (CVE-2026-7837)

nvd.nist.gov (CVE-2026-7837)

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