HOME VULNERABILITIESCVE-2019-18929

HIGH

CVE-2019-18929

CWE-787Published: November 13, 2019· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official Description

Western Digital My Cloud EX2 Ultra firmware 2.31.183 allows web users (including guest accounts) to remotely execute arbitrary code via a download_mgr.cgi stack-based buffer overflow.

Technical Analysis

CVE-2019-18929 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

western_digital2 product(s)

my cloud ex2 ultra firmwaremy cloud ex2 ultra

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/DelspoN/CVE/blob/master/CVE-2019-18929/description.txt

ADVISORYhttps://github.com/DelspoN/CVE/tree/master/CVE-2019-18929

ADVISORYhttps://github.com/DelspoN/CVE/blob/master/CVE-2019-18929/description.txt

ADVISORYhttps://github.com/DelspoN/CVE/tree/master/CVE-2019-18929

All References (4)

→

https://github.com/DelspoN/CVE/blob/master/CVE-2019-18929/description.txtThird Party Advisory

→

https://github.com/DelspoN/CVE/tree/master/CVE-2019-18929Exploit · Third Party Advisory

→

https://github.com/DelspoN/CVE/blob/master/CVE-2019-18929/description.txtThird Party Advisory

→

https://github.com/DelspoN/CVE/tree/master/CVE-2019-18929Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2019-18929

CVSS Score8.8 / 10

SeverityHIGH

WeaknessCWE-787

CISA KEVNo

Affected1 vendor(s)

PublishedNov 13, 2019

Related CVEs (CWE-787)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2019-18929 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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