CVE-2021-27503: Ypsomed mylife Cloud, mylife Mobile Application, Ypsomed mylife Cloud: All versions prior to 1.7.2, Ypsomed my

Q: How do I fix CVE-2021-27503?

mylife: upgrade to 1.7.5; mylife cloud: upgrade to 1.7.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-27503 being exploited?

CVE-2021-27503 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-27503 affect?

CVE-2021-27503 affects mylife, mylife cloud. Severity is medium (CVSS 4.8). 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 encrypts on the application layer of the communication protocol between the

Q: How urgent is CVE-2021-27503?

Priority 33/100. Remotely exploitable, no login, no user action

Routine

MEDIUM 4.8REMOTEUPGRADEUPGRADE

CVE-2021-27503 is a medium-severity flaw (CVSS 4.8) affecting mylife, mylife cloud. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 encrypts on the application layer of the communication protocol between the Ypsomed mylife App and mylife Cloud credentials based on hard-coded secrets, which allows man-in-the-middle attackers to tamper with messages.

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-798
Published	2021-08-02
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: ypsomed

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-08-02 21:15 UTCPublished CVE record published
2026-06-17 03:44 UTCUpdated Record last modified

ypsomed mylife UPGRADE

Affected: < 1.7.5

Fixed in: 1.7.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mylife || rpm -q mylife || mylife --version

2. UPGRADE to 1.7.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mylife

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mylife

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

ypsomed mylife cloud UPGRADE

Affected: < 1.7.2

Fixed in: 1.7.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mylife-cloud || rpm -q mylife-cloud || mylife-cloud --version

2. UPGRADE to 1.7.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mylife-cloud

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mylife-cloud

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-27503?

mylife: upgrade to 1.7.5; mylife cloud: upgrade to 1.7.2. Exact commands for each OS are on this page.

Is CVE-2021-27503 being exploited?

CVE-2021-27503 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-27503 affect?

CVE-2021-27503 affects mylife, mylife cloud. Severity is medium (CVSS 4.8). 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 encrypts on the application layer of the communication protocol between the

How urgent is CVE-2021-27503?

Priority 33/100. Remotely exploitable, no login, no user action

Related CVEs

CVE-2021-27499 MEDIUM 5.9 UPGRADE UPGRADE Ypsomed mylife Cloud, mylife Mobile Application, Ypsomed mylife Cloud: All versions prior to 1.7.2, Ypsomed my
CVE-2021-27495 HIGH 7.1 UPGRADE UPGRADE Ypsomed mylife Cloud, mylife Mobile Application:Ypsomed mylife Cloud,All versions prior to 1.7.2,Ypsomed mylif
CVE-2021-27491 HIGH 7.5 UPGRADE UPGRADE Ypsomed mylife Cloud, mylife Mobile Application:Ypsomed mylife Cloud,All versions prior to 1.7.2,Ypsomed mylif

References

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