How severe is CVE-2020-35138?

CVE-2020-35138 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35138 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35138?

CVE-2020-35138 primarily affects Mobileiron Mobile@work. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-35138?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-35138 published?

CVE-2020-35138 was published on 2021-03-29 and last updated on 2026-06-17.

CVE-2020-35138

CVE-2020-35138 is a critical-severity vulnerability in Mobileiron Mobile@work with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Mobileiron Mobile@work
Published: 2021-03-29
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2020-35138?: 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
How severe is CVE-2020-35138?: CVE-2020-35138 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35138 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35138?: CVE-2020-35138 primarily affects Mobileiron Mobile@work. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-35138?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-35138 published?: CVE-2020-35138 was published on 2021-03-29 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:mobileiron:mobile\@work:*:*:*:*:*:android:*:*
cpe:2.3:a:mobileiron:mobile\@work:*:*:*:*:*:iphone_os:*:*

More vulnerabilities in Mobileiron Mobile@work

CVE-2020-35137 — High (CVSS 7.5): The MobileIron agents through 2021-03-22 for Android and iOS contain a hardcoded API key, used to communicate with the…
CVE-2014-5903 — Medium (CVSS 5.4): The Mobile@Work (aka com.mobileiron) application 6.0.0.1.12R for Android does not verify X.509 certificates from SSL…
CVE-2021-3391 — Medium (CVSS 5.3): MobileIron Mobile@Work through 2021-03-22 allows attackers to distinguish among valid, disabled, and nonexistent user…

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