CVE-2019-20537Network attack vector

Arbitrary code execution via SEM Trustlet memory overwrite

Published Mar 24, 2020 · Updated Aug 5, 2024

Memory corruption in the SEM Trustlet on Samsung Android 9 devices allows remote attackers to execute arbitrary code through malicious input. The trustlet performs an arbitrary memory overwrite, but Samsung has not disclosed the triggering input or faulty memory operation. Exposure is limited to Samsung mobile devices with TEEGRIS or Qualcomm chipsets, where successful exploitation executes attacker-controlled code.

CVSS severity9.8
Critical
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the SEM Trustlet on Samsung Android 9 devices allows remote attackers to execute arbitrary code through malicious input. The trustlet performs an arbitrary memory overwrite, but Samsung has not disclosed the triggering input or faulty memory operation. Exposure is limited to Samsung mobile devices with TEEGRIS or Qualcomm chipsets, where successful exploitation executes attacker-controlled code.

The record

CVE
CVE-2019-20537
Published
Mar 24, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

10.0NISTAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NISTCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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