RCE in Netatalk

CVE-2026-44055

A logic error involving bitwise OR operations in Netatalk 3.1.4 through 4.4.2 allows a remote authenticated attacker to inject OS commands and execute arbitrary code.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-44055: held from 0.004 to 0.006.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.003

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-44055?
CVE-2026-44055 is a high-severity vulnerability in Netatalk, classified under OS Command Injection. CVSS score: 7.5/10. Published 2026-05-21.
How severe is CVE-2026-44055?
High severity. CVSS v3 base score is 7.5 out of 10.