CVE-2025-20922

Memory disclosure via unchecked text-paragraph append

Published Mar 6, 2025 · Updated Mar 6, 2025

Out-of-bounds read in Samsung Notes before 4.4.26.71 allows local users to read memory while appending a crafted text paragraph. The text-paragraph append path accepts paragraph data without the input validation needed to keep reads within the backing buffer. Samsung has not disclosed the affected function or data structure; exploitation requires local low-privilege access and exposes memory without reported modification or service interruption.

CVSS severity5.5
Medium
EPSS probability0.28%
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 Notes before 4.4.26.71 allows local users to read memory while appending a crafted text paragraph. The text-paragraph append path accepts paragraph data without the input validation needed to keep reads within the backing buffer. Samsung has not disclosed the affected function or data structure; exploitation requires local low-privilege access and exposes memory without reported modification or service interruption.

The record

CVE
CVE-2025-20922
Published
Mar 6, 2025
Updated
Mar 6, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Notes
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 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 privilegesauthenticated

What is affected?

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

Published CVSS scores

5.5Samsung MobileCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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