What is CVE-2022-23121?

CVE-2022-23121 is a critical-severity vulnerability in Netatalk, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2023-03-28.

How severe is CVE-2022-23121?

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

Is CVE-2022-23121 known to be exploited?

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

Vulnerability in Netatalk

CVE-2022-23121

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parse_entries function. The issue results from the lack of proper error handling when parsing AppleDouble entries. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15819.

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: 0.086 (94.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.086 · newest: 0.086 · change: 0.000

Affected products

Netatalk — versions 3.1.12
Debian Linux — versions 10.0, 11.0

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

Public proof-of-concept exploits

References

netatalk.sourceforge.io/3.1/ReleaseNotes3.1.13.html (Release Notes)
www.zerodayinitiative.com/advisories/ZDI-22-527/ (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/2023/06/msg00000.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-2022-23121?: CVE-2022-23121 is a critical-severity vulnerability in Netatalk, classified under Improper Handling of Exceptional Conditions. CVSS score: 9.8/10. Published 2023-03-28.
How severe is CVE-2022-23121?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-23121 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.