How severe is CVE-2021-25447?

CVE-2021-25447 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-25447 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25447?

CVE-2021-25447 affects Samsung Smartthings Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25447?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-25447 published?

CVE-2021-25447 was published on 2021-08-05 and last updated on 2026-06-17.

CVE-2021-25447

CVE-2021-25447 is a medium-severity vulnerability in Samsung Smartthings Firmware with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Samsung Smartthings Firmware
Published: 2021-08-05
Last modified: 2026-06-17

Description

Improper access control vulnerability in SmartThings prior to version 1.7.67.25 allows untrusted applications to cause local file inclusion in webview.

Frequently asked questions

What is CVE-2021-25447?: Improper access control vulnerability in SmartThings prior to version 1.7.67.25 allows untrusted applications to cause local file inclusion in webview.
How severe is CVE-2021-25447?: CVE-2021-25447 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-25447 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25447?: CVE-2021-25447 affects Samsung Smartthings Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25447?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25447 published?: CVE-2021-25447 was published on 2021-08-05 and last updated on 2026-06-17.

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=8

Affected products (1)

cpe:2.3:o:samsung:smartthings_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Samsung Smartthings Firmware

CVE-2021-25446 — Medium (CVSS 5.3): Improper access control vulnerability in SmartThings prior to version 1.7.67.25 allows untrusted applications to cause…
CVE-2021-25404 — Low (CVSS 3.3): Information Exposure vulnerability in SmartThings prior to version 1.7.64.21 allows attacker to access user information…

All CVEs affecting Samsung Smartthings Firmware →

Other CWE-284 (Improper Access Control) vulnerabilities

CVE-2026-76607 — Critical (CVSS 10.0): Joomla Extension - fabrikar.com - Missing ACL check in download element in Fabrik < 4.7.3 - ???.
CVE-2026-20315 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering…
CVE-2026-70921 — Critical (CVSS 10.0): Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion (component: Security). The…
CVE-2026-66803 — Critical (CVSS 10.0): Improper access control in Azure Cosmos DB allows an unauthorized attacker to execute code over a network.
CVE-2026-58630 — Critical (CVSS 10.0): Improper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-60358 — Critical (CVSS 10.0): Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine).…

Browse all CWE-284 (Improper Access Control) vulnerabilities →