CVE & CISA-KEV Catalog

CVE-2022-23121

CRITICALEPSS 95th pctl
9.8
CVSS v3
NVD

Description

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.

CWE-755

How to fix

Remediation Available
netatalkDebian
Fixed in:3.1.12~ds-8+deb11u1CVE-2022-23121
Fixed in:3.1.13~ds-1CVE-2022-23121
Fixed in:3.1.13~ds-1CVE-2022-23121
netatalkUbuntu
Fixed in:2.2.2-1ubuntu2.2+esm1USN-6146-1
Fixed in:2.2.5-1ubuntu0.2+esm1USN-6146-1
Fixed in:2.2.6-1ubuntu0.18.04.2+esm1USN-6146-1
Fixed in:3.1.12~ds-4ubuntu0.20.04.1USN-6146-1
Fixed in:3.1.12~ds-9ubuntu0.22.04.1USN-6146-1
Fixed in:3.1.13~ds-2ubuntu0.22.10.1USN-6146-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

8.59%probability of exploitation in 30 days
95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Other references1

Related Vulnerabilities

Other CWE-755 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2017-5638Critical9.8100%KEV + RansomFix
CVE-2020-7247Critical9.899%KEVFix
CVE-2023-36933High7.572%-Fix
CVE-2018-0934High7.567%-Fix
CVE-2019-14287High8.864%-Fix
CVE-2019-12815Critical9.858%-Fix

Common questions

How do I fix CVE-2022-23121?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2022-23121 being actively exploited?

Not that we know of. CVE-2022-23121 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 8.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 95% of all scored CVEs.

How severe is CVE-2022-23121?

CVE-2022-23121 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2022-23121 affect?

Published advisories record a fix for netatalk (Debian), netatalk (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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CVE-2022-23121 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-04.