CVE-2024-22170

Arbitrary code execution via unchecked HTTP response

Published Sep 27, 2024 · Updated Sep 27, 2024

Heap-based buffer overflow in ddns-start on Western Digital My Cloud before 5.29.102 allows man-in-the-middle attackers to execute code. The Dynamic DNS client fails to validate an HTTP response length before copying attacker-controlled data into a fixed-length heap buffer. Exploitation requires interception of a Dynamic DNS exchange, and successful corruption executes code in the device context.

CVSS severity9.2
Critical
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Heap-based buffer overflow in ddns-start on Western Digital My Cloud before 5.29.102 allows man-in-the-middle attackers to execute code. The Dynamic DNS client fails to validate an HTTP response length before copying attacker-controlled data into a fixed-length heap buffer. Exploitation requires interception of a Dynamic DNS exchange, and successful corruption executes code in the device context.

The record

CVE
CVE-2024-22170
Published
Sep 27, 2024
Updated
Sep 27, 2024
Vendor
Western Digital Corporation
Product
My Cloud DL2100 Firmware
Classifications
CWE-119, CAPEC-100, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.29.102

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Western Digital Corporation · My Cloud DL2100 Firmwareversion=0 <5.29.102
Western Digital Corporation · My Cloud EX4100 Firmwareversion=0 <5.29.102
Western Digital Corporation · My Cloud EX2100 Firmwareversion=0 <5.29.102
Western Digital Corporation · My Cloud Mirror Gen 2 Firmwareversion=0 <5.29.102
Western Digital Corporation · WD Cloud (Japan) Firmwareversion=0 <5.29.102
Western Digital Corporation · My Cloud PR4100 Firmwareversion=0 <5.29.102
Western Digital Corporation · My Cloud PR2100 Firmwareversion=0 <5.29.102
Western Digital Corporation · My Cloud DL4100 Firmwareversion=0 <5.29.102
Western Digital Corporation · My Cloudversion=0 <5.29.102
Western Digital Corporation · My Cloud EX2 Ultra Firmwareversion=0 <5.29.102

Published CVSS scores

7.5Trend Micro Zero Day InitiativeCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2Western DigitalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC-100Overflow Buffers
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo