CVE-2020-35138: The MobileIron agents through 2021-03-22 for Android and iOS contain a hardcoded encryption key, used to encry

Q: How do I fix CVE-2020-35138?

mobile\@work: upgrade to newer than 2021-03-22; mobile\@work: upgrade to newer than 2021-03-22. Exact commands for each OS are on this page.

Q: Is CVE-2020-35138 being exploited?

CVE-2020-35138 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-2020-35138 affect?

CVE-2020-35138 affects mobile\@work, mobile\@work. Severity is critical (CVSS 9.8). The MobileIron agents through 2021-03-22 for Android and iOS contain a hardcoded encryption key, used to encrypt the submission of username/password details during the authentication process, as demonstrated by Mobile@Work (aka com.mobileir

Q: How urgent is CVE-2020-35138?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADEUPGRADE

CVE-2020-35138 is a critical-severity flaw (CVSS 9.8) affecting mobile\@work, mobile\@work. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The MobileIron agents through 2021-03-22 for Android and iOS contain a hardcoded encryption key, used to encrypt the submission of username/password details during the authentication process, as demonstrated by Mobile@Work (aka com.mobileiron). The key is in the com/mobileiron/common/utils/C4928m.java file. NOTE: It has been asserted that there is no causality or connection between credential encryption and the MiTM attack

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-798
Published	2021-03-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mobileiron

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

Am I affected?

Timeline

2021-03-29 20:15 UTCPublished CVE record published
2026-06-17 03:13 UTCUpdated Record last modified

mobileiron mobile\@work UPGRADE

Affected: <= 2021-03-22

Fixed in: newer than 2021-03-22

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2021-03-22 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mobilework

Note

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

mobileiron mobile\@work UPGRADE

Affected: <= 2021-03-22

Fixed in: newer than 2021-03-22

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2021-03-22 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mobilework

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-2020-35138?

mobile\@work: upgrade to newer than 2021-03-22; mobile\@work: upgrade to newer than 2021-03-22. Exact commands for each OS are on this page.

Is CVE-2020-35138 being exploited?

CVE-2020-35138 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-2020-35138 affect?

CVE-2020-35138 affects mobile\@work, mobile\@work. Severity is critical (CVSS 9.8). The MobileIron agents through 2021-03-22 for Android and iOS contain a hardcoded encryption key, used to encrypt the submission of username/password details during the authentication process, as demonstrated by Mobile@Work (aka com.mobileir

How urgent is CVE-2020-35138?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities · Android vulnerabilities · iOS vulnerabilities

Related CVEs

CVE-2021-3391 MEDIUM 5.3 UPGRADE UPGRADE MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexiste
CVE-2020-35137 HIGH 7.5 UPGRADE UPGRADE The MobileIron agents through 2021-03-22 for Android and iOS contain a hardcoded API key, used to communicate
CVE-2014-5903 MEDIUM 5.4 DOWNGRADE The Mobile@Work (aka com.mobileiron) application 6.0.0.1.12R for Android does not verify X.509 certificates fr

References

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