HIGH
CVE-2019-18931
CWE-120Published: November 13, 2019· Updated: Jun 17, 2026
8.8
CVSS v3.1
Official Description
Western Digital My Cloud EX2 Ultra firmware 2.31.195 allows a Buffer Overflow with Extended Instruction Pointer (EIP) control via crafted GET/POST parameters.
Technical Analysis
CVE-2019-18931 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.
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
All References (4)
→
https://github.com/DelspoN/CVE/blob/master/CVE-2019-18931/description.txtThird Party Advisory
→
https://github.com/DelspoN/CVE/tree/master/CVE-2019-18931Exploit · Third Party Advisory
→
https://github.com/DelspoN/CVE/blob/master/CVE-2019-18931/description.txtThird Party Advisory
→
https://github.com/DelspoN/CVE/tree/master/CVE-2019-18931Exploit · Third Party Advisory
Quick Facts
CVE IDCVE-2019-18931
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedNov 13, 2019
Related CVEs (CWE-120)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-18931 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.