CVE-2025-21064: Samsung Mobile Smart Switch · Improper Authentication
Affects Samsung Mobile Smart SwitchSource CVE Database V5
Not known to be exploited · CVSS 8.8 High : upgrade to 3.7.66.6 soon.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.7.66.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Upgrade Samsung Mobile Smart Switch to 3.7.66.6.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Samsung Mobile Smart Switch | Affected
| Fixed in
|
AI-suggested
To mitigate CVE-2025-21064, organizations and users should immediately update Samsung Smart Switch to version 3.7.66.6 or later once available. If you cannot patch yet, restrict Smart Switch usage to trusted and secure network environments, such as isolated wired networks or secured Wi-Fi with strong encryption and access controls. Employ network segmentation to separate devices performing data transfers from general user networks to reduce exposure to adjacent attackers. Monitor network traffic for unusual or unauthorized data transfer attempts involving Smart Switch. Educate users about the risks of using Smart Switch on public or untrusted networks. Additionally, consider disabling Smart Switch functionality on devices where it is not required. Samsung should provide timely patches and detailed guidance, and organizations should incorporate this vulnerability into their vulnerability management and incident response plans. Finally, implement endpoint security solutions capable of detecting anomalous network activity related to device synchronization tools.
Description
Improper authentication in Smart Switch prior to version 3.7.66.6 allows adjacent attackers to access transferring data.