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CVE-2021-27499

20
FAUCET Score

CVE-2021-27499 affects Ypsomed mylife Cloud (versions prior to 1.7.2) and mylife Mobile Application (versions prior to 1.7.5). The vulnerability stems from the use of non-random Initialization Vectors (IVs) in the application layer encryption, enabling man-in-the-middle (MITM) attackers to tamper with communications. Rated Medium severity (CVSS 5.9), this flaw has a high integrity impact (I:H) with a network attack vector (AV:N) and high attack complexity (AC:H). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.7.5CPE matchmatch criteria
cpe:2.3:a:ypsomed:mylife:*:*:*:*:*:*:*:*
< 1.7.2CPE matchmatch criteria
cpe:2.3:a:ypsomed:mylife_cloud:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
38.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 5th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

us-cert.cisa.gov / ics/advisories/icsma-21-196-01
Third Party AdvisoryUS Government Resource