Samsung Smart Switch 3.7.64.10/3.7.66.6/3.7.67.2/3.7.68.6 authentication replay

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k1.29

Summaryinfo

A vulnerability was found in Samsung Smart Switch. It has been rated as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to authentication replay. This vulnerability is uniquely identified as CVE-2026-20999. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Samsung Smart Switch. It has been rated as critical. This issue affects an unknown function. The manipulation with an unknown input leads to a authentication replay vulnerability. Using CWE to declare the problem leads to CWE-294. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). Impacted is confidentiality. The summary by CVE is:

Authentication bypass by replay in Smart Switch prior to version 3.7.69.15 allows remote attackers to trigger privileged functions.

The advisory is shared at security.samsungmobile.com. The identification of this vulnerability is CVE-2026-20999 since 12/11/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1040 for this issue.

Upgrading to version 3.7.69.15 eliminates this vulnerability.

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Productinfo

Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication replay
CWE: CWE-294 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Smart Switch 3.7.69.15

Timelineinfo

12/11/2025 CVE reserved
03/16/2026 +95 days Advisory disclosed
03/16/2026 +0 days VulDB entry created
03/31/2026 +15 days VulDB entry last update

Sourcesinfo

Vendor: samsung.com

Advisory: security.samsungmobile.com
Status: Confirmed

CVE: CVE-2026-20999 (🔒)
GCVE (CVE): GCVE-0-2026-20999
GCVE (VulDB): GCVE-100-351197

Entryinfo

Created: 03/16/2026 06:59
Updated: 03/31/2026 04:44
Changes: 03/16/2026 06:59 (66), 03/31/2026 04:44 (12)
Complete: 🔍
Cache ID: 216:708:103

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