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Fencer Vulns
high 8.0

CVE-2024-20816 json

Improper authentication vulnerability in onCharacteristicWriteRequest in Auto Hotspot prior to SMR Feb-2024 Release 1 allows adjacent attac…

published 2024-02-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-18531

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

Improper authentication vulnerability in onCharacteristicWriteRequest in Auto Hotspot prior to SMR Feb-2024 Release 1 allows adjacent attackers connect to victim's mobile hotspot without user awareness.

Patch / fix

  • Samsung Mobile Samsung Mobile Devices SMR Feb-2024 Release in Android 11, 12, 13, 14

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • Samsung Mobile Samsung Mobile Devices

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.