CVE-2019-18930

Name: CVE-2019-18930
Creator: NVD / NIST
Published: 2019-11-13T16:15:11.207+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 3.21%

Last modified Jun 17, 2026

CVE-2019-18930 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 3.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

3.21%

86.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Western Digital	My Cloud Ex2 Ultra Firmware	2.31.183

References

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

Timeline

Published: Nov 13, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18930?

How severe is CVE-2019-18930?

CVE-2019-18930 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.21% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18930?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18930?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST