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Samsung Account EUVDEUVD-2026-12305

| CVE-2026-20994 MEDIUM
URL Redirection to Untrusted Site (Open Redirect) (CWE-601)
2026-03-16 SamsungMobile
6.9
CVSS 4.0 · NVD
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Craft malicious URL with redirect parameter
  2. Delivery
    Send link to victim via social engineering
  3. Exploit
    User clicks link in Samsung Account
  4. Execution
    Redirect to attacker's domain
  5. Impact
    Access token captured from response

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V3 - Web Frontend Security Redirect URL validation
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Samsung Account app version prior to 15.5.01.1. Victim must click attacker-controlled URL. Requires user interaction (UI:P). No authentication required.

Impact

The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N) indicates this is a network-exploitable vulnerability with low attack complexity but requires user interaction and has present attack requirements. The high confidentiality impact reflects the potential for access token theft. However, the lack of KEV listing suggests no known active exploitation in the wild. The requirement for user interaction (UI:P) and attack requirements (AT:P) reduce the likelihood of mass exploitation compared to fully automated attacks. This represents a moderate priority issue - serious enough to patch promptly but not an emergency unless you have evidence of targeted attacks against your users.

Exploit ScenarioDerived

An attacker crafts a malicious link that appears to direct to Samsung's login page but includes a redirect parameter pointing to an attacker-controlled server. When a victim clicks the link and successfully authenticates with their Samsung credentials, the authentication token is included in the redirect to the attacker's server, allowing account takeover. The attack requires convincing the user to click the malicious link through phishing emails, compromised websites, or social engineering.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

A URL redirection vulnerability in Samsung Account allows remote attackers to potentially steal user access tokens through malicious redirect chains. The vulnerability affects Samsung Account versions prior to 15.5.01.1 and requires user interaction to exploit. While not currently in CISA's Known Exploited Vulnerabilities catalog, the issue has a moderate CVSS score of 7.0 and could lead to account takeover if successfully exploited.

RemediationAI

Update Samsung Account to version 15.5.01.1 or later through your device's application update mechanism or Samsung Galaxy Store. For devices that cannot immediately update, users should be educated to carefully verify URLs before entering Samsung Account credentials and to only log in through official Samsung applications or trusted bookmarks. System administrators managing Samsung devices should prioritize this update in their patch management cycles and consider implementing email or SMS alerts to warn users about potential phishing attempts exploiting this vulnerability.

Affected VersionsENISA

Samsung Account patch: 15.5.01.1

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability involves improper validation of redirect URLs in the Samsung Account authentication flow, allowing attackers to craft malicious URLs that redirect users to attacker-controlled domains after authentication. While no specific CWE is assigned, this appears to be a classic open redirect vulnerability typically classified under CWE-601 (URL Redirection to Untrusted Site). The vulnerability affects the Samsung Account application which handles authentication and authorization for Samsung services across mobile devices and web platforms.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.9 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

3
Severity Changed
May 20, 2026 - 04:22 NVD
HIGH MEDIUM
CVSS changed
May 20, 2026 - 04:22 NVD
7.0 (HIGH) 6.9 (MEDIUM)
CVE Published
Mar 16, 2026 - 04:32 nvd
HIGH 7.0

DescriptionCVE.org

URL redirection in Samsung Account prior to version 15.5.01.1 allows remote attackers to potentially get access token.

Executive ViewAI

Why It Matters

A URL redirection vulnerability in Samsung Account could allow attackers to steal user credentials and gain unauthorized access to employee accounts. This poses a direct risk to organizational data and systems accessible through compromised Samsung accounts, requiring immediate mitigation until a patch becomes available.

Business Impact: High
Compensating Controls

Enable multi-factor authentication on all Samsung Accounts; implement email gateway filtering to block known malicious redirect domains; deploy user awareness training focused on URL validation and phishing indicators; enable enhanced logging and monitoring of Samsung Account authentication events; consider network segmentation to limit lateral movement from compromised accounts; restrict Samsung Account access to business-critical functions only where feasible; establish incident response procedures for account compromise scenarios.

Threat Intelligence Overview

EPSS Score
0.2%
Top 59% exploitable
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact
High

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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