What is CVE-2026-7837?

CVE-2026-7837 is a low-severity vulnerability in Netatalk, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 3.7/10. Published 2026-05-21.

How severe is CVE-2026-7837?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Netatalk

CVE-2026-7837

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 cond…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.000 (14.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Netatalk — versions 3.0.0, 4.5.0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

33c584b5-0579-4c06-b2a0-8d8329fcab9c (vendor-advisory)

Frequently asked questions

What is CVE-2026-7837?: CVE-2026-7837 is a low-severity vulnerability in Netatalk, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 3.7/10. Published 2026-05-21.
How severe is CVE-2026-7837?: Low severity. CVSS v3 base score is 3.7 out of 10.