What is the CVSS score of CVE-2021-25439?

CVE-2021-25439 has a CVSS 3.1 base score of 3.3 (Low). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.2%.

Members CVE-2021-25439

LOW

Improper Access Control (CWE-284)

2021-07-08 mobile.security@samsung.com

Authentication Bypass Google Samsung Members

3.3

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-284 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Access control enforcement MITRE ATT&CK 1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 3.3 (LOW). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	Successful exploitation could compromise the low-severity affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).

No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

Improper access control vulnerability in Samsung Members prior to versions 2.4.85.11 in Android O(8.1) and below, and 3.9.10.11 in Android P(9.0) and above allows untrusted applications to cause. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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 is classified under CWE-284. Improper access control vulnerability in Samsung Members prior to versions 2.4.85.11 in Android O(8.1) and below, and 3.9.10.11 in Android P(9.0) and above allows untrusted applications to cause arbitrary webpage loading in webview. Affected products include: Samsung Members.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 3.3 LOW

AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

DescriptionNVD

Threat Intelligence Overview

EPSS Score

0.2%

Top 87% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

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 LOW

CISA KEV No

Public POC No

EPSS 0.2%

Patch available No

Active threat No

Deciding rule

LOW severity (CVSS 0.1-3.9)

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

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact· derived

Low

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +16

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:samsung:members:*:*:*:*:*:*:*:*

cpe:2.3:a:samsung:members:3.9.10.11:*:*:*:*:*:*:*

More in Members

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CVE-2021-25438 HIGH This Week

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Improper access control vulnerability in Samsung Members prior to versions 2.4.85.11 in Android O(8.1) and below, and 3.

CVE-2021-25374 HIGH This Week

7.5 Apr 09

An improper authorization vulnerability in Samsung Members "samsungrewards" scheme for deeplink in versions 2.4.83.9 in

CVE-2026-20986 MEDIUM This Month

5.5 Feb 04

Samsung Members versions prior to 15.5.05.4 contain a path traversal vulnerability that enables local attackers to overw

CVE-2022-30748 MEDIUM This Month

5.5 Jun 07

Unprotected dynamic receiver in Samsung Members prior to version 4.2.005 allows attacker to launch arbitrary activity. R

CVE-2025-20949 MEDIUM This Month

5.1 May 07

Path traversal vulnerability in Samsung Members prior to version 5.0.00.11 allows attackers to read and write arbitrary

CVE-2025-20898 MEDIUM This Month

4.6 Feb 04

Improper input validation in Samsung Members prior to version 5.2.00.12 allows physical attackers to access data across

CVE-2026-20985 MEDIUM This Month

4.3 Feb 04

Members versions up to 5.6.00.11 contains a vulnerability that allows attackers to connect arbitrary URL and launch arbi

CVE-2023-30703 MEDIUM This Month

4.3 Aug 10

Improper URL validation vulnerability in Samsung Members prior to version 14.0.07.1 allows attackers to access sensitive

CVE-2022-28777 LOW Monitor

3.3 Apr 11

Improper access control vulnerability in Samsung Members prior to version 13.6.08.5 allows local attacker to execute cal

CVE-2021-25343 LOW Monitor

3.3 Mar 04

Calling of non-existent provider in Samsung Members prior to version 2.4.81.13 (in Android O(8.1) and below) and 3.8.00.

CVE-2021-25342 LOW Monitor

3.3 Mar 04

Calling of non-existent provider in SMP sdk prior to version 3.0.9 allows unauthorized actions including denial of servi

CVE-2025-21079 HIGH This Month

7.1 Nov 05

Improper input validation in Samsung Members prior to version 5.5.01.3 allows remote attackers to connect arbitrary URL

Same weakness CWE-284 – Improper Access Control

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CVE-2015-3306 CRITICAL POC

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CVE-2012-4681 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

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CVE-2012-1723 CRITICAL POC

9.8

CVE-2012-5076 CRITICAL POC

9.8

CVE-2014-3120 HIGH POC

8.1

CVE-2013-2423 LOW POC

3.7

CVE-2016-3427 CRITICAL

9.8

Same technique Authentication Bypass

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CVE-2023-22515 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

ADVISORY https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=7

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GitHub PoC

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