CVE-2025-20988

Memory disclosure via fingerprint trustlet overread

Published Jun 4, 2025 · Updated Jun 4, 2025

Out-of-bounds read in Samsung Mobile Devices before SMR Jun-2025 Release 1 allows local users to read memory through the fingerprint trustlet. The trustlet performs an out-of-bounds memory read, but Samsung has not disclosed the removed implementation or the input that reaches it. Exploitation requires local privileged access and exposes adjacent memory without reported integrity or availability impact.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Samsung Mobile Devices before SMR Jun-2025 Release 1 allows local users to read memory through the fingerprint trustlet. The trustlet performs an out-of-bounds memory read, but Samsung has not disclosed the removed implementation or the input that reaches it. Exploitation requires local privileged access and exposes adjacent memory without reported integrity or availability impact.

The record

CVE
CVE-2025-20988
Published
Jun 4, 2025
Updated
Jun 4, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-125, CAPEC-540
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 2025Record 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 versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile DevicesAffected versions are unavailable in this record.

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
5.5Samsung MobileCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CAPEC-540Overread Buffers

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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