9.9

CVE-2026-44050: netatalk Heap-based Buffer Overflow

CVSS: 9.9v3.1CriticalDeferred
AliasesUBUNTU-CVE-2026-44050DEBIAN-CVE-2026-44050
Published 21-05-2026Last modified 22-05-2026
Open JSON

Vulnerability summary

CVE-2026-44050 is a critical (CVSS 9.9) Heap-based Buffer Overflow vulnerability in netatalk. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 53.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.74%
0%100%
Low · +0.32 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
USN-8395-1

Timeline

  1. 21-05-2026
    PublishedVulnerability first disclosed.
  2. 22-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.74%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

+0.32 pp

From 0.42% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.74%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • netatalk< 4.2.3~ds-1+deb13u2 | < 4.4.3~ds-1
Netatalk1 product
Ubuntu1 product
  • netatalk< 2.2.2-1ubuntu2.2+esm3 | < 2.2.5-1ubuntu0.2+esm3 | < 2.2.6-1ubuntu0.18.04.2+esm3 | < 3.1.12~ds-4ubuntu0.20.04.4+esm1 | < 3.1.12~ds-9ubuntu0.22.04.4+esm1 | < 3.1.18~ds-1ubuntu0.1~esm2 | All versions (No fix recorded) | < 4.2.3~ds-2.1ubuntu0.1

3 vendors · 3 products

References

5 links