Stack-Based Buffer Overflow in Netatalk File Server Suite
CVE-2026-45698

7.5HIGH

Key Information:

Vendor

Netatalk

Status
Netatalk
Vendor
CVE Published:
17 August 2026

What is CVE-2026-45698?

A stack-based buffer overflow vulnerability exists in the Netatalk file server's deletedir() function, affecting versions 3.1.19 to 4.4.2. The vulnerability arises from an integer underflow during path construction, leading to an unsafe boundary check that permits an unbounded strcpy() operation. This flaw allows attackers to potentially exploit nearly full stack buffers with controlled filenames, posing significant security risks. A patch has been released in version 4.4.3, addressing this critical issue.

Affected Version(s)

netatalk >= 3.1.19, < 4.4.3

References

https://github.com/Netatalk/netatalk/security/advisories/...
x_refsource_CONFIRM
https://github.com/Netatalk/netatalk/releases/tag/netatal...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.