Ypsomed mylife Cloud, mylife Mobile Application, Ypsomed mylife Cloud: All versions prior to 1.7.2, Ypsomed mylife App: All versions prior…

published 2021-08-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14253

cvss: 5.9; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

ypsomed mylife 1.7.5
ypsomed mylife_cloud 1.7.2

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSMA-21-196-01 updated 2021-07-15 cvss 5.4

ICSMA-21-196-01_Ypsomed mylife

Ypsomed mylife App < 1.7.5 Ypsomed mylife Cloud < 1.7.2
affected: mitigation

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

n/a Ypsomed mylife Cloud, mylife Mobile Application

Classification

Weakness

CWE-329 Generation of Predictable IV with CBC Mode
CWE-330 Use of Insufficiently Random Values

References

us-cert.cisa.gov /ics/advisories/icsma-21-196-01
third-party-advisory, us-government-resource

Sources

CVE List CVE-2021-27499
NVD CVE-2021-27499

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