How severe is CVE-2019-18930?

CVE-2019-18930 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-18930 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18930?

CVE-2019-18930 affects Western Digital My Cloud Ex2 Ultra Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18930?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-18930 published?

CVE-2019-18930 was published on 2019-11-13 and last updated on 2026-06-17.

CVE-2019-18930

CVE-2019-18930 is a high-severity vulnerability in Western Digital My Cloud Ex2 Ultra Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Western Digital My Cloud Ex2 Ultra Firmware
Published: 2019-11-13
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-18930?: 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.
How severe is CVE-2019-18930?: CVE-2019-18930 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-18930 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18930?: CVE-2019-18930 affects Western Digital My Cloud Ex2 Ultra Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18930?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-18930 published?: CVE-2019-18930 was published on 2019-11-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:western_digital:my_cloud_ex2_ultra_firmware:2.31.183:*:*:*:*:*:*:*

More vulnerabilities in Western Digital My Cloud Ex2 Ultra Firmware

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