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NVD / CVE Program· CNA WDC PSIRT

CVE-2022-22995: Western Digital My Cloud OS 5 and My Cloud Home Unauthenticated Arbitrary File Write Vulnerability in Netatalk

Noroxi assessment

Priority: Plan (action score 40/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.7% (FIRST EPSS); higher than 86% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: netatalk (Debian:10) 3.1.12~ds-3+deb10u5; netatalk (Debian:11) 3.1.12~ds-8+deb11u2; netatalk (Debian:13) 3.1.18~ds-1.

Add it to your regular patch cycle. Upgrade to netatalk (Debian:10) 3.1.12~ds-3+deb10u5; netatalk (Debian:11) 3.1.12~ds-8+deb11u2; netatalk (Debian:13) 3.1.18~ds-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The combination of primitives offered by SMB and AFP in their default configuration allows the arbitrary writing of files. By exploiting these combination of primitives, an attacker can execute arbitrary code.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Mar 25, 2022
Updated
Jun 17, 2026
EPSS
2.7% · 86th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.7%

CNA vs NVD score

NVD
9.8
CNA · WDC PSIRT
10.0
0.2 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-22995

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
westerndigitalmy cloud pr2100 firmware
westerndigitalmy cloud pr2100
westerndigitalmy cloud pr4100 firmware
westerndigitalmy cloud pr4100
westerndigitalmy cloud ex4100 firmware
westerndigitalmy cloud ex4100
westerndigitalmy cloud ex2 ultra firmware
westerndigitalmy cloud ex2 ultra
westerndigitalmy cloud mirror gen 2 firmware
westerndigitalmy cloud mirror gen 2
westerndigitalmy cloud dl2100 firmware
westerndigitalmy cloud dl2100

and 12 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora37
  • fedoraproject fedora38
  • fedoraproject fedora39
  • netatalk netatalkbefore 3.1.18
  • westerndigital my cloud dl2100 firmwarebefore 5.19.117
  • westerndigital my cloud dl4100 firmwarebefore 5.19.117
  • westerndigital my cloud ex2 ultra firmwarebefore 5.19.117
  • westerndigital my cloud ex2100 firmwarebefore 5.19.117
  • westerndigital my cloud ex4100 firmwarebefore 5.19.117
  • westerndigital my cloud firmwarebefore 5.19.117
  • westerndigital my cloud home firmwarebefore 7.16-220
  • westerndigital my cloud mirror gen 2 firmwarebefore 5.19.117
  • westerndigital my cloud pr2100 firmwarebefore 5.19.117
  • westerndigital my cloud pr4100 firmwarebefore 5.19.117
  • westerndigital wd cloud firmwarebefore 5.19.117

Versions reported by the vendor

Affected version ranges reported by the assigning authority (WDC PSIRT). Independent of NVD's CPE analysis and usually ahead of it.

  • Western Digital My Cloud

    • My Cloud OS 5 and later · before 5.19.117affected

  • Western Digital My Cloud Home

    • My Cloud Home and later · before 7.16-220affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10netatalkbefore 3.1.12~ds-3+deb10u53.1.12~ds-3+deb10u5
Debian:11netatalkbefore 3.1.12~ds-8+deb11u23.1.12~ds-8+deb11u2
Debian:13netatalkbefore 3.1.18~ds-13.1.18~ds-1
SUSE:Linux Enterprise Software Development Kit 12 SP5netatalkbefore 3.1.0-3.22.13.1.0-3.22.1

Same product

westerndigital: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-29844Western Digital My Cloud OS 5 arbitrary file read and write vulnerability via ftp
    50Plan
  • CVE-2022-29843Western Digital My Cloud OS 5 devices Command Injection Vulnerability
    39Monitor
  • CVE-2022-23000Weak Default SSL use in Port Forwarding Service
    31Monitor

Published before and after this one in the same product

  • Later →CVE-2022-22999Jul 25, 2022 · Cross-site Scripting Vulnerability in USB Backups App
    19Monitor
  • Later →CVE-2022-36331Jun 12, 2023 · Impersonation attack causing an Authentication Bypass on Western Digital devices
    30Monitor
  • Later →CVE-2023-22817Feb 5, 2024 · Server-side Request Forgery vulnerability in Western Digital My Cloud, My Cloud Home and SanDisk ibi products
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:netatalk3.1.18~ds-1 · Debian:13Package registry (OSV)
suse:netatalk3.1.0-3.22.1 · SUSE:Linux Enterprise Software Development Kit 12 SP5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-59 · Improper Link Resolution Before File Access ('Link Following')

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records