What’s Vulnerable › Vulnerabilities

CVE-2022-23000: Weak Default SSL use in Port Forwarding Service

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-07-25 · updated 2026-06-17
• Weakness: CWE-757

Description

The Western Digital My Cloud Web App [https://os5.mycloud.com/] uses a weak SSLContext when attempting to configure port forwarding rules. This was enabled to maintain compatibility with old or outdated home routers. By using an "SSL" context instead of "TLS" or specifying stronger validation, deprecated or insecure protocols are permitted. As a result, a local user with no privileges can exploit this vulnerability and jeopardize the integrity, confidentiality and authenticity of information transmitted. The scope of impact cannot extend to other components and no user input is required to exploit this vulnerability.

Affected products

• Westerndigital My Cloud Dl2100 Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Dl4100 Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Ex2100 Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Ex2 Ultra Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Ex4100 Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Mirror G2 Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Pr2100 Firmware: before 5.23.114 — fixed in 5.23.114
• Westerndigital My Cloud Pr4100 Firmware: before 5.23.114 — fixed in 5.23.114

How to fix

Upgrade to a fixed version: Westerndigital My Cloud Dl2100 Firmware 5.23.114; Westerndigital My Cloud Dl4100 Firmware 5.23.114; Westerndigital My Cloud Ex2100 Firmware 5.23.114; Westerndigital My Cloud Ex2 Ultra Firmware 5.23.114; Westerndigital My Cloud Ex4100 Firmware 5.23.114; Westerndigital My Cloud Firmware 5.23.114; Westerndigital My Cloud Mirror G2 Firmware 5.23.114; Westerndigital My Cloud Pr2100 Firmware 5.23.114; Westerndigital My Cloud Pr4100 Firmware 5.23.114. Check the vendor advisory for mitigations.

References

• https://www.westerndigital.com/support/product-security/wdc-22011-my-cloud-firmware-version-5-23-114
• https://www.westerndigital.com/support/product-security/wdc-22011-my-cloud-firmware-version-5-23-114

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