CVE-2021-25510Public exploit

Local code execution via case-sensitive extension validation

Published Dec 8, 2021 · Updated Aug 3, 2024

Improper input validation in FilterProvider on Samsung Mobile Devices before SMR Dec-2021 Release 1 allows local users to execute code. Its native-library verifier checks only the lowercase .so extension, so an uppercase .SO library bypasses signature verification and is later loaded by the Camera process. A malicious app must first reach the signature-protected service, and the device user must open Camera and select an effect; the demonstrated chain then runs injected code with system-app privileges.

CVSS severity5.3
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in FilterProvider on Samsung Mobile Devices before SMR Dec-2021 Release 1 allows local users to execute code. Its native-library verifier checks only the lowercase .so extension, so an uppercase .SO library bypasses signature verification and is later loaded by the Camera process. A malicious app must first reach the signature-protected service, and the device user must open Camera and select an effect; the demonstrated chain then runs injected code with system-app privileges.

The record

CVE
CVE-2021-25510
Published
Dec 8, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-20, T1404
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 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

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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=P(9.0), Q(10.0), R(11.0) <SMR Dec-2021 Release 1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

5.3Samsung MobileCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NVDAV:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1404Exploitation for Privilege Escalation

Public exploit references

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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