High severity · published May 21, 2026
CVE-2026-44055
Bitwise OR logic bug enables shell injection
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
Netatalk · Netatalk
3.1.4 through 4.4.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44055
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44055
netatalk.io
https://netatalk.io/security/CVE-2026-44055
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