CVE-2021-25424

Name: CVE-2021-25424
Creator: NVD / NIST
Published: 2021-06-11T15:15:10.963+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2021-25424 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Improper authentication vulnerability in Tizen bluetooth-frwk prior to Firmware update JUN-2021 Release allows bluetooth attacker to take over the user's bluetooth device without user awareness.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

Improper authentication vulnerability in Tizen bluetooth-frwk prior to Firmware update JUN-2021 Release allows bluetooth attacker to take over the user's bluetooth device without user awareness.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.44%

35.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Samsung	Galaxy Watch Active 2 Firmware	< 5.5
Samsung	Galaxy Watch Active Firmware	< 5.5
Samsung	Galaxy Watch Firmware	< 5.5
Samsung	Galaxy Watch 3 Firmware	< 5.5
Samsung	Gear S3 Firmware	< 5.5
Samsung	Gear S2 Firmware	< 5.5
Samsung	Gear S Firmware	< 5.5
Samsung	Gear 2 Firmware	< 5.5
Samsung	Gear 2 Neo Firmware	< 5.5

References

https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=6Vendor Advisory
https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=6Vendor Advisory

Timeline

Published: Jun 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25424?

Improper authentication vulnerability in Tizen bluetooth-frwk prior to Firmware update JUN-2021 Release allows bluetooth attacker to take over the user's bluetooth device without user awareness.

How severe is CVE-2021-25424?

CVE-2021-25424 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25424?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25424?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST