CVE-2023-21497

Memory-address disclosure via externally controlled format string

Published May 4, 2023 · Updated Feb 12, 2025

Format-string injection in Samsung Mobile Devices before SMR May-2023 Release 1 allows local users to expose mPOS TUI trustlet memory addresses. The mPOS TUI trustlet treats externally controlled input as a formatting template, causing format directives to disclose memory addresses. Exploitation requires a high-privilege local foothold; the disclosed consequence excludes reported data modification or service interruption.

CVSS severity4.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Format-string injection in Samsung Mobile Devices before SMR May-2023 Release 1 allows local users to expose mPOS TUI trustlet memory addresses. The mPOS TUI trustlet treats externally controlled input as a formatting template, causing format directives to disclose memory addresses. Exploitation requires a high-privilege local foothold; the disclosed consequence excludes reported data modification or service interruption.

The record

CVE
CVE-2023-21497
Published
May 4, 2023
Updated
Feb 12, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-134
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Select Android 13 devices <SMR May-2023 Release 1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=Select Android 13 devices <SMR May-2023 Release 1

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.4Samsung MobileCVSS:3.1/AV:L/AC:L/PR:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-134Use of Externally-Controlled Format String

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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