HOMEVULNERABILITIESCVE-2020-35138
CRITICAL

CVE-2020-35138

CWE-798Published: March 29, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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

NVD Source

Technical Analysis

CVE-2020-35138 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

mobileiron1 product(s)
mobile\@work
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/optiv/rustyIron
ADVISORYhttps://play.google.com/store/apps/details?id=com.mobileiron&hl=en_US&gl=US
ADVISORYhttps://www.ivanti.com/blog/a-warranted-response-to-inaccurate-optiv-research
ADVISORYhttps://www.optiv.com/explore-optiv-insights/source-zero/mobileiron-mdm-contains-static-key-allowing-account-enumeration
ADVISORYhttps://www.optiv.com/insights/source-zero/blog/mobileiron-mdm-contains-static-key-allowing-account-enumeration
ADVISORYhttps://github.com/optiv/rustyIron
ADVISORYhttps://play.google.com/store/apps/details?id=com.mobileiron&hl=en_US&gl=US
ADVISORYhttps://www.ivanti.com/blog/a-warranted-response-to-inaccurate-optiv-research
ADVISORYhttps://www.optiv.com/explore-optiv-insights/source-zero/mobileiron-mdm-contains-static-key-allowing-account-enumeration
ADVISORYhttps://www.optiv.com/insights/source-zero/blog/mobileiron-mdm-contains-static-key-allowing-account-enumeration

All References (10)

→
https://github.com/optiv/rustyIronExploit · Third Party Advisory
→
https://play.google.com/store/apps/details?id=com.mobileiron&hl=en_US&gl=USProduct · Third Party Advisory
→
https://www.ivanti.com/blog/a-warranted-response-to-inaccurate-optiv-researchThird Party Advisory
→
https://www.optiv.com/explore-optiv-insights/source-zero/mobileiron-mdm-contains-static-key-allowing-account-enumerationExploit · Third Party Advisory
→
https://www.optiv.com/insights/source-zero/blog/mobileiron-mdm-contains-static-key-allowing-account-enumerationExploit · Third Party Advisory
→
https://github.com/optiv/rustyIronExploit · Third Party Advisory
→
https://play.google.com/store/apps/details?id=com.mobileiron&hl=en_US&gl=USProduct · Third Party Advisory
→
https://www.ivanti.com/blog/a-warranted-response-to-inaccurate-optiv-researchThird Party Advisory
→
https://www.optiv.com/explore-optiv-insights/source-zero/mobileiron-mdm-contains-static-key-allowing-account-enumerationExploit · Third Party Advisory
→
https://www.optiv.com/insights/source-zero/blog/mobileiron-mdm-contains-static-key-allowing-account-enumerationExploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-35138
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-798
CISA KEVNo
Affected1 vendor(s)
PublishedMar 29, 2021

Related CVEs (CWE-798)

CVE-2018-5560
10.0
CVE-2021-40519
10.0
CVE-2026-45631
10.0
CVE-2025-7503
10.0
CVE-2020-1614
10.0
CVE-2026-22769
KEV10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-35138 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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