HOMEVULNERABILITIESCVE-2019-18930
HIGH

CVE-2019-18930

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 account) to remotely execute arbitrary code via a stack-based buffer overflow. There is no size verification logic in one of functions in libscheddl.so, and download_mgr.cgi makes it possible to enter large-sized f_idx inputs.

NVD Source

Technical Analysis

CVE-2019-18930 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
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
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-2019-18930/description.txt
ADVISORYhttps://github.com/DelspoN/CVE/tree/master/CVE-2019-18930
ADVISORYhttps://github.com/DelspoN/CVE/blob/master/CVE-2019-18930/description.txt
ADVISORYhttps://github.com/DelspoN/CVE/tree/master/CVE-2019-18930

All References (4)

→
https://github.com/DelspoN/CVE/blob/master/CVE-2019-18930/description.txtThird Party Advisory
→
https://github.com/DelspoN/CVE/tree/master/CVE-2019-18930Exploit · Third Party Advisory
→
https://github.com/DelspoN/CVE/blob/master/CVE-2019-18930/description.txtThird Party Advisory
→
https://github.com/DelspoN/CVE/tree/master/CVE-2019-18930Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2019-18930
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedNov 13, 2019

Related CVEs (CWE-787)

CVE-2019-5684
10.0
CVE-2020-11897
10.0
CVE-2018-3991
10.0
CVE-2019-6235
10.0
CVE-2019-5049
10.0
CVE-2022-30292
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-18930 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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