CVE-2023-21451

Memory corruption via malformed SECRIL session list

Published Feb 9, 2023 · Updated Mar 24, 2025

Stack-based overflow in SECRIL before Android 12 allows local users to corrupt memory through IpcRxEmbmsSessionList. Samsung identifies improper input validation at that locus but has not disclosed the malformed field or unchecked memory operation. Exploitation requires highly privileged local access and high-complexity conditions; corruption can expose memory and alter or interrupt processing.

CVSS severity6.7
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based overflow in SECRIL before Android 12 allows local users to corrupt memory through IpcRxEmbmsSessionList. Samsung identifies improper input validation at that locus but has not disclosed the malformed field or unchecked memory operation. Exploitation requires highly privileged local access and high-complexity conditions; corruption can expose memory and alter or interrupt processing.

The record

CVE
CVE-2023-21451
Published
Feb 9, 2023
Updated
Mar 24, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-787, CWE-20
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 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=unspecified <Android S(12)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=unspecified <Android S(12)

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.7Samsung MobileCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:L

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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-20Improper Input Validation

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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