TOCTOU Vulnerability in Netatalk Affects Multiple Versions
CVE-2026-7837

3.7LOW

Key Information:

Vendor

Netatalk

Status
Netatalk
Vendor
CVE Published:
21 May 2026

What is CVE-2026-7837?

A time-of-check time-of-use (TOCTOU) vulnerability exists in the ad_flush function of Netatalk, versions 3.0.0 through 4.4.2. This flaw pertains to root-privileged file operations and could enable a remote attacker to exploit specific race conditions to manipulate data in a limited manner. Proper mitigation strategies are essential for safeguarding against potential unauthorized modifications.

Affected Version(s)

Netatalk 3.0.0 <= 4.4.2

Netatalk 4.5.0

References

https://netatalk.io/security/CVE-2026-7837
vendor-advisory

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Arjun Basnet from Securin
.