Heap-based buffer overflow in Netatalk - #VU137335
Published: July 12, 2026
Vulnerability identifier: #VU137335
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: N/A
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Netatalk
Affected software:
Netatalk
Netatalk
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to a heap-based buffer overflow in comm_rcv() when handling network requests containing an oversized name length. A remote attacker can send a specially crafted request to execute arbitrary code.
The function reads rqst->namelen from the network without bounds validation and writes that many bytes into a 1025-byte buffer.
Remediation
Install security update from vendor's website.