CVE-2021-25449Network attack vector

Code execution via heap buffer overflow

Published Sep 9, 2021 · Updated Aug 3, 2024

Heap-based buffer overflow in Samsung Mobile Devices before SMR Sep-2021 Release 1 allows attackers to execute code in mediaextractor. The libsapeextractor library accepts input without sufficient bounds validation and writes beyond a heap allocation. Unauthenticated network access is the published gate, and successful exploitation executes code within mediaextractor; Samsung has not disclosed the exact trigger format.

CVSS severity6.5
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in Samsung Mobile Devices before SMR Sep-2021 Release 1 allows attackers to execute code in mediaextractor. The libsapeextractor library accepts input without sufficient bounds validation and writes beyond a heap allocation. Unauthenticated network access is the published gate, and successful exploitation executes code within mediaextractor; Samsung has not disclosed the exact trigger format.

The record

CVE
CVE-2021-25449
Published
Sep 9, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-119, CWE-122, T1658
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=O(8.1), P(9.0), Q(10.0), R(11.0) <SMR Sep-2021 Release 1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=O(8.1), P(9.0), Q(10.0), R(11.0) <SMR Sep-2021 Release 1

Published CVSS scores

6.5Samsung MobileCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-122Heap-based Buffer Overflow
T1658Exploitation for Client Execution

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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