CVE-2019-20545Network attack vector

Secure-memory corruption via HDCP Trustlet overflow

Published Mar 24, 2020 · Updated Aug 5, 2024

Buffer overflow in the HDCP Trustlet on Samsung mobile devices running Android 8.x or 9.0 allows remote attackers to corrupt TEEGRIS memory. Public records identify the HDCP Trustlet as the locus but do not disclose the input path, affected routine, or unchecked operation that overruns the secure-memory buffer. Exposure is limited to Exynos-based devices, and the published evidence confirms secure-memory corruption but does not establish code execution or a specific service interruption.

CVSS severity9.8
Critical
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the HDCP Trustlet on Samsung mobile devices running Android 8.x or 9.0 allows remote attackers to corrupt TEEGRIS memory. Public records identify the HDCP Trustlet as the locus but do not disclose the input path, affected routine, or unchecked operation that overruns the secure-memory buffer. Exposure is limited to Exynos-based devices, and the published evidence confirms secure-memory corruption but does not establish code execution or a specific service interruption.

The record

CVE
CVE-2019-20545
Published
Mar 24, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
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

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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