What’s Vulnerable › Vulnerabilities

CVE-2021-27499

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-02 · updated 2026-06-17
• Weakness: CWE-329

Description

Ypsomed mylife Cloud, mylife Mobile Application, Ypsomed mylife Cloud: All versions prior to 1.7.2, Ypsomed mylife App: All versions prior to 1.7.5,The application layer encryption of the communication protocol between the Ypsomed mylife App and mylife Cloud uses non-random IVs, which allows man-in-the-middle attackers to tamper with messages.

Affected products

• Ypsomed Mylife: before 1.7.5 — fixed in 1.7.5
• Ypsomed Mylife Cloud: before 1.7.2 — fixed in 1.7.2

How to fix

Upgrade to a fixed version: Ypsomed Mylife 1.7.5; Ypsomed Mylife Cloud 1.7.2. Check the vendor advisory for mitigations.

References

• https://us-cert.cisa.gov/ics/advisories/icsma-21-196-01
• https://us-cert.cisa.gov/ics/advisories/icsma-21-196-01

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