CVE-2020-35138Public exploitNetwork attack vector

Credential decryption via embedded registration encryption key

Published Mar 29, 2021 · Updated Aug 4, 2024

Hardcoded-key exposure in MobileIron Mobile@Work through 2021-03-22 allows man-in-the-middle attackers to decrypt registration credentials. The m20857f() routine in com/mobileiron/common/utils/C4928m.java encrypts submitted usernames and passwords with a key embedded in the app. Credential recovery requires intercepted traffic and injection or trust of a malicious TLS certificate, and Ivanti disputes any causal link between the static key and the interception attack.

CVSS severity9.8
Critical
EPSS probability1.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hardcoded-key exposure in MobileIron Mobile@Work through 2021-03-22 allows man-in-the-middle attackers to decrypt registration credentials. The m20857f() routine in com/mobileiron/common/utils/C4928m.java encrypts submitted usernames and passwords with a key embedded in the app. Credential recovery requires intercepted traffic and injection or trust of a malicious TLS certificate, and Ivanti disputes any causal link between the static key and the interception attack.

The record

CVE
CVE-2020-35138
Published
Mar 29, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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