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Identity Server CVE-2025-0663

MEDIUM
Improper Authentication (CWE-287)
2025-09-23 ed10eef1-636d-4fbe-9993-6890dfa878f8
Authentication Bypass Identity Server Identity Server As Key Manager Open Banking Iam Wso2
6.8
CVSS 3.1 · Vendor: ed10eef1-636d-4fbe-9993-6890dfa878f8
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Vulnerability Assessment

Weakness
CWE
CWE-287
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

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

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Impact

CVSS score of 6.8 (MEDIUM). Attack characteristics: adjacent network attack vector, low complexity, high privileges required, no user interaction not required. EPSS exploitation probability: 0.03%.
Exploit ScenarioDerived

An attacker could exploit this vulnerability to bypass authentication mechanisms to gain unauthorized access.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 28, 2026

A cross-tenant authentication vulnerability exists in multiple WSO2 products due to improper cryptographic design in Adaptive Authentication. Rated medium severity (CVSS 6.8), 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. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. A cross-tenant authentication vulnerability exists in multiple WSO2 products due to improper cryptographic design in Adaptive Authentication. A single cryptographic key is used across all tenants to sign authentication cookies, allowing a privileged user in one tenant to forge authentication cookies for users in other tenants. Because the Auto-Login feature is enabled by default, this flaw may allow an attacker to gain unauthorized access and potentially take over accounts in other tenants. Successful exploitation requires access to Adaptive Authentication functionality, which is typically restricted to high-privileged users. The vulnerability is only exploitable when Auto-Login is enabled, reducing its practical impact in deployments where the feature is disabled. Affected products include: Wso2 Identity Server, Wso2 Identity Server As Key Manager, Wso2 Open Banking Iam.

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Severity by source

Vendor (ed10eef1-636d-4fbe-9993-6890dfa878f8) PRIMARY 6.8 MEDIUM
AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (ed10eef1-636d-4fbe-9993-6890dfa878f8) · only source for this CVE.

CVSS VectorVendor: ed10eef1-636d-4fbe-9993-6890dfa878f8

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

A cross-tenant authentication vulnerability exists in multiple WSO2 products due to improper cryptographic design in Adaptive Authentication. A single cryptographic key is used across all tenants to sign authentication cookies, allowing a privileged user in one tenant to forge authentication cookies for users in other tenants.

Because the Auto-Login feature is enabled by default, this flaw may allow an attacker to gain unauthorized access and potentially take over accounts in other tenants. Successful exploitation requires access to Adaptive Authentication functionality, which is typically restricted to high-privileged users. The vulnerability is only exploitable when Auto-Login is enabled, reducing its practical impact in deployments where the feature is disabled.

Executive ViewAI

Why It Matters

CVE-2025-0663 presents notable security risk, a improper authentication vulnerability rated CVSS 6.8. This could allow unauthorized access to protected resources. Organizations should apply vendor updates when available and monitor for exploitation.

Business Impact: Moderate
Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access, enable MFA, monitor auth logs.

Threat Intelligence Overview

EPSS Score
0.0%
Top 92% exploitable
Data Quality
3 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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
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

Exploitation· derived
None
System Exposure· derived
Controlled
Automatable· derived
No

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
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)CVE.org

cpe:2.3:a:wso2:identity_server:5.10.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:5.11.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:6.1.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:identity_server_as_key_manager:5.10.0:*:*:*:*:*:*:*
cpe:2.3:a:wso2:open_banking_iam:2.0.0:*:*:*:*:*:*:*

More in Identity Server

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An incorrect authorization vulnerability exists in multiple WSO2 products due to a flaw in the SOAP admin service, which
CVE-2016-4311 HIGH POC
8.8 Feb 17

Cross-site request forgery (CSRF) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 allows remote at
CVE-2016-4312 HIGH POC
7.5 Feb 17

XML external entity (XXE) vulnerability in the XACML flow feature in WSO2 Identity Server 5.1.0 before WSO2-CARBON-PATCH
CVE-2022-29548 MEDIUM POC
6.1 Apr 21

A reflected XSS issue exists in the Management Console of several WSO2 products. Rated medium severity (CVSS 6.1), this

CVE-2020-14446 MEDIUM POC
6.1 Jun 18

An issue was discovered in WSO2 Identity Server through 5.10.0 and WSO2 IS as Key Manager through 5.10.0. Rated medium s
CVE-2017-14651 MEDIUM POC
4.8 Sep 21

WSO2 Data Analytics Server 3.1.0 has XSS in carbon/resources/add_collection_ajaxprocessor.jsp via the collectionName or

CVE-2020-14445 MEDIUM POC
5.4 Jun 18

An issue was discovered in WSO2 Identity Server through 5.9.0 and WSO2 IS as Key Manager through 5.9.0. Rated medium sev
CVE-2020-14444 MEDIUM POC
5.4 Jun 18

An issue was discovered in WSO2 Identity Server through 5.9.0 and WSO2 IS as Key Manager through 5.9.0. Rated medium sev
CVE-2018-8716 MEDIUM POC
5.4 Apr 25

WSO2 Identity Server before 5.5.0 has XSS via the dashboard, allowing attacks by low-privileged attackers. Rated medium

CVE-2020-24705 HIGH
8.8 Aug 27

An issue was discovered in certain WSO2 products. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit
CVE-2020-24703 HIGH
8.8 Aug 27

An issue was discovered in certain WSO2 products. Rated high severity (CVSS 8.8), this vulnerability is remotely exploit

Same weakness CWE-287 – Improper Authentication

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CVE-2022-40684 CRITICAL POC
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CVE-2020-0688 HIGH POC
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CVE-2023-46805 HIGH POC
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CVE-2023-35078 CRITICAL POC
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CVE-2015-1187 CRITICAL POC
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CVE-2024-7593 CRITICAL POC
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CVE-2017-7921 CRITICAL POC
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Same technique Authentication Bypass

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CVE-2015-3306 CRITICAL POC
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CVE-2023-22515 CRITICAL POC
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CVE-2012-4681 CRITICAL POC
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CVE-2013-2465 CRITICAL POC
9.8
CVE-2011-3544 CRITICAL POC
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CVE-2024-0012 CRITICAL POC
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References

Advisories & patches
ADVISORY https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2025-3864/

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