CVE-2021-25366

Unauthorized access to Secret mode

Published Mar 25, 2021 · Updated Aug 3, 2024

Improper access control in Samsung Internet before 13.2.1.70 allows physically proximate attackers to bypass Secret mode authentication. Samsung has not disclosed the affected component or the access-control decision that accepts an unauthorized Secret mode entry. Exploitation requires physical proximity, high privileges, and user interaction; the bypass permits unauthorized access to protected browser data.

CVSS severity2.9
Low
EPSS probability0.27%
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 Internet before 13.2.1.70 allows physically proximate attackers to bypass Secret mode authentication. Samsung has not disclosed the affected component or the access-control decision that accepts an unauthorized Secret mode entry. Exploitation requires physical proximity, high privileges, and user interaction; the bypass permits unauthorized access to protected browser data.

The record

CVE
CVE-2021-25366
Published
Mar 25, 2021
Updated
Aug 3, 2024
Vendor
Samsung Electronics
Product
Samsung Internet
Classifications
CWE-703
Attack vector
physical
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 25, 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=unspecified <13.2.1.70

What conditions does exploitation require?

Attack vectorphysical
Required privilegesUnavailable in this record.

What is affected?

Samsung Electronics · Samsung Internetversion=unspecified <13.2.1.70

Published CVSS scores

2.9NIST NVDCVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
3.2Samsung MobileCVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N
3.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-703Improper Check or Handling of Exceptional Conditions

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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