Vulnerability · Published May 21, 2026 · Assigned by securin
CVE-2026-44050Heap buffer overflow in CNID daemon comm_rcv()
Critical 9.9
In plain English
A critical-severity heap buffer overflow in Netatalk from Netatalk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.4%top 63.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | netatalk | 4.4.3-r0 | ALPINE-CVE-2026-44050 |
| Debian:13 | netatalk | 4.2.3~ds-1+deb13u2 | DEBIAN-CVE-2026-44050 |
| Debian:14 | netatalk | 4.4.3~ds-1 | DEBIAN-CVE-2026-44050 |
| Ubuntu:25.10 | netatalk | no fix listed | UBUNTU-CVE-2026-44050 |
| Ubuntu:26.04:LTS | netatalk | 4.2.3~ds-2.1ubuntu0.1 | USN-8395-1 |
| Ubuntu:26.04:LTS | netatalk | 4.2.3~ds-2.1ubuntu0.1 | UBUNTU-CVE-2026-44050 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- Netatalk Security Advisory CVE-2026-44050 vendor-advisory