Western Digital SanDisk X300, X300s, X400, and X600 devices: A vulnerability in the wear-leveling algorithm of the drive may cause cryptogr…

published 2020-03-10 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3356

cvss: 5.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits: 0; none known

Western Digital SanDisk X300, X300s, X400, and X600 devices: A vulnerability in the wear-leveling algorithm of the drive may cause cryptographically sensitive parameters (such as data encryption keys) to remain on the drive media after their intended erasure.

Patch / fix

fixed in 20

westerndigital sandisk_x600_sd9tb8w-128g_firmware x6112100
westerndigital sandisk_x600_sd9tb8w-256g_firmware x6112100
westerndigital sandisk_x600_sd9tb8w-512g_firmware x6112100
westerndigital sandisk_x600_sd9tb8w-1t00_firmware x6112100
westerndigital sandisk_x600_sd9tb8w-2t00_firmware x6112100
westerndigital sandisk_x600_sd9tn8w-128g_firmware x6112100
westerndigital sandisk_x600_sd9tn8w-256g_firmware x6112100
westerndigital sandisk_x600_sd9tn8w-512g_firmware x6112100
westerndigital sandisk_x600_sd9tn8w-1t00_firmware x6112100
westerndigital sandisk_x600_sd9tn8w-2t00_firmware x6112100
westerndigital sandisk_x600_sd9sb8w-128g_firmware x6112100
westerndigital sandisk_x600_sd9sb8w-256g_firmware x6112100
westerndigital sandisk_x600_sd9sb8w-512g_firmware x6112100
westerndigital sandisk_x600_sd9sb8w-1t00_firmware x6112100
westerndigital sandisk_x600_sd9sb8w-2t00_firmware x6112100
westerndigital sandisk_x600_sd9sn8w-128g_firmware x6112100
westerndigital sandisk_x600_sd9sn8w-256g_firmware x6112100
westerndigital sandisk_x600_sd9sn8w-512g_firmware x6112100
westerndigital sandisk_x600_sd9sn8w-1t00_firmware x6112100
westerndigital sandisk_x600_sd9sn8w-2t00_firmware x6112100

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

CWE-522 Insufficiently Protected Credentials

References

westerndigital.com /support/productsecurity/wdc-19006-sandisk-x600-sata-ssd
vendor-advisory
support.wdc.com /downloads.aspx?g=907&lang=en
not-applicable
westerndigital.com /support/productsecurity/wdc-19007-sandisk-x300-x400-sata-s
broken-link

Sources

CVE List CVE-2019-11686
NVD CVE-2019-11686

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary