CVE-2026-44050

Critical

Published: 21 May 2026

Published

21 May 2026

Modified

21 May 2026

KEV Added

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Patch

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CVSS Score v3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Score 0.0042 33.6th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-44050 is a critical-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Netatalk (inferred from references). Its CVSS base score is 9.9 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 33.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-31229

Vulnerability details

A heap-based buffer overflow in the CNID daemon comm_rcv() function in Netatalk 2.0.0 through 4.4.2 allows a remote authenticated attacker to execute arbitrary code with escalated privileges or cause a denial of service.

CWE(s): CWE-122

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

Why these techniques?

Buffer overflow in network-exposed CNID daemon directly enables remote exploitation of a public-facing service (T1190) leading to arbitrary code execution and privilege escalation (T1068).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0