What is CVE-2022-23123?

CVE-2022-23123 is a critical-severity vulnerability in Netatalk, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2023-03-28.

How severe is CVE-2022-23123?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-23123 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Netatalk

CVE-2022-23123

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the getdirparams method. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-15830.

Vulnerability class: Buffer Overflow

Published 2023-03-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.038 (89.7th percentile), scored 2026-09-28.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: -0.000

Affected products

Netatalk — versions 3.1.12
Debian Linux — versions 10.0, 11.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html (Release Notes)
www.zerodayinitiative.com/advisories/ZDI-22-528/ (VDB Entry, Third Party Advisory)
lists.debian.org/debian-lts-announce/2023/05/msg00018.html (mailing-list, Mailing List, Third Party Advisory)
lists.debian.org/debian-lts-announce/2023/08/msg00016.html (mailing-list, Mailing List, Third Party Advisory)
www.debian.org/security/2023/dsa-5503 (vendor-advisory, Third Party Advisory)
security.gentoo.org/glsa/202311-02 (vendor-advisory, Third Party Advisory, Issue Tracking)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2022-23123?: CVE-2022-23123 is a critical-severity vulnerability in Netatalk, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2023-03-28.
How severe is CVE-2022-23123?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-23123 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.