CVE-2021-25440Public exploit

System file access via unchecked content URI

Published Jul 8, 2021 · Updated Aug 3, 2024

Improper access control in Samsung FactoryCameraFB before 3.4.74 allows local users to read and write arbitrary files as the system user. CameraTestActivity processes an attacker-supplied content URI under the application's UID 1000 system identity and returns the resulting URI permission to the caller. An untrusted application installed on an affected Samsung device can invoke the activity without user interaction and cross application sandboxes to expose or overwrite protected files.

CVSS severity7.8
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Samsung FactoryCameraFB before 3.4.74 allows local users to read and write arbitrary files as the system user. CameraTestActivity processes an attacker-supplied content URI under the application's UID 1000 system identity and returns the resulting URI permission to the caller. An untrusted application installed on an affected Samsung device can invoke the activity without user interaction and cross application sandboxes to expose or overwrite protected files.

The record

CVE
CVE-2021-25440
Published
Jul 8, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics
Product
FactoryCameraFB
Classifications
CWE-284, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 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=- <3.4.74

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics · FactoryCameraFBversion=- <3.4.74

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1068Exploitation 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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