CVE-2021-25446Network attack vector

Arbitrary webpage loading via webview access control

Published Aug 5, 2021 · Updated Aug 3, 2024

Improper access control in Samsung SmartThings before 1.7.67.25 allows remote attackers to load arbitrary webpages through the app webview. The SmartThings component accepts requests from an untrusted application without enforcing access control before initiating webpage navigation. Exploitation requires a malicious application installed on the mobile device; the documented impact is unauthorized webpage loading without evidence of code execution or service interruption.

CVSS severity5.3
Medium
EPSS probability0.81%
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 SmartThings before 1.7.67.25 allows remote attackers to load arbitrary webpages through the app webview. The SmartThings component accepts requests from an untrusted application without enforcing access control before initiating webpage navigation. Exploitation requires a malicious application installed on the mobile device; the documented impact is unauthorized webpage loading without evidence of code execution or service interruption.

The record

CVE
CVE-2021-25446
Published
Aug 5, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
SmartThings
Classifications
CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 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=- <1.7.67.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · SmartThingsversion=- <1.7.67.25

Published CVSS scores

5.0NVDAV:N/AC:L/Au:N/C:N/I:P/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

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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