HOMEVULNERABILITIESCVE-2020-12830
CRITICAL

CVE-2020-12830

CWE-787Published: October 27, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Addressed multiple stack buffer overflow vulnerabilities that could allow an attacker to carry out escalation of privileges through unauthorized remote code execution in Western Digital My Cloud devices before 5.04.114.

NVD Source

Technical Analysis

CVE-2020-12830 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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 9.8.

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.None
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

Affected Vendors & Products

westerndigital6 product(s)
my cloud firmwaremy cloud ex4100my cloud expert series ex2my cloud mirror - gen 2my cloud pr2100my cloud pr4100
Source: NVD CPE · 6 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://support.wdc.com/downloads.aspx?g=907&lang=en
ADVISORYhttps://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114
ADVISORYhttps://support.wdc.com/downloads.aspx?g=907&lang=en
ADVISORYhttps://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114

All References (4)

→
https://support.wdc.com/downloads.aspx?g=907&lang=enVendor Advisory
→
https://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114Vendor Advisory
→
https://support.wdc.com/downloads.aspx?g=907&lang=enVendor Advisory
→
https://www.westerndigital.com/support/productsecurity/wdc-20007-my-cloud-firmware-version-5-04-114Vendor Advisory

Quick Facts

CVE IDCVE-2020-12830
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedOct 27, 2020

Related CVEs (CWE-787)

CVE-2022-30292
10.0
CVE-2004-0574
10.0
CVE-2019-5049
10.0
CVE-2020-11897
10.0
CVE-2015-0235
10.0
CVE-2018-10718
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-12830 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.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2020-12830·NVD