CVE-2026-20997Network attack vector

Authentication bypass via improper signature verification

Published Mar 16, 2026 · Updated Mar 16, 2026

Improper signature verification in Samsung Smart Switch before 3.7.69.15 allows remote attackers to bypass authentication. The application accepts an authentication signature without properly verifying it, but Samsung has not disclosed the affected function, message, or exact validation error. User interaction is required, and Samsung links the five-CVE authentication chain containing this flaw to arbitrary application installation.

CVSS severity5.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper signature verification in Samsung Smart Switch before 3.7.69.15 allows remote attackers to bypass authentication. The application accepts an authentication signature without properly verifying it, but Samsung has not disclosed the affected function, message, or exact validation error. User interaction is required, and Samsung links the five-CVE authentication chain containing this flaw to arbitrary application installation.

The record

CVE
CVE-2026-20997
Published
Mar 16, 2026
Updated
Mar 16, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Smart Switch
Classifications
CWE-347
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Smart SwitchAffected versions are unavailable in this record.

Published CVSS scores

5.3Samsung MobileCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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