CVE-2025-0663

Cross-tenant account takeover via shared cookie-signing key

Published Sep 23, 2025 · Updated Sep 23, 2025

Authentication bypass in multiple WSO2 products allows remote authenticated users to take over cross-tenant accounts via forged cookies. Adaptive Authentication signs every tenant's Auto-Login cookies with one cryptographic key, enabling a privileged tenant user to mint cookies for other tenants. Exploitation requires high-privileged access to Adaptive Authentication and enabled Auto-Login; successful forgery impersonates a victim account across tenant boundaries.

CVSS severity6.8
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authentication bypass in multiple WSO2 products allows remote authenticated users to take over cross-tenant accounts via forged cookies. Adaptive Authentication signs every tenant's Auto-Login cookies with one cryptographic key, enabling a privileged tenant user to mint cookies for other tenants. Exploitation requires high-privileged access to Adaptive Authentication and enabled Auto-Login; successful forgery impersonates a victim account across tenant boundaries.

The record

CVE
CVE-2025-0663
Published
Sep 23, 2025
Updated
Sep 23, 2025
Vendor
WSO2
Product
WSO2 Identity Server
Classifications
CWE-287, T1550.004
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Sep 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.10.0 <5.10.0.343
  2. Affected versionversion=5.11.0 <5.11.0.392
  3. Affected versionversion=6.0.0 <6.0.0.228
  4. Affected versionversion=6.1.0 <6.1.0.220
  5. Affected versionversion=7.0.0 <7.0.0.88

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

WSO2 · WSO2 Identity Serverversion=5.10.0 <5.10.0.343; version=5.11.0 <5.11.0.392; version=6.0.0 <6.0.0.228; version=6.1.0 <6.1.0.220; version=7.0.0 <7.0.0.88
WSO2 · WSO2 Open Banking IAMversion=2.0.0 <2.0.0.387
WSO2 · WSO2 Identity Server as Key Managerversion=5.10.0 <5.10.0.336

Published CVSS scores

6.8WSO2 LLCCVSS:3.1/AV:A/AC:L/PR:H/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)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1550.004Web Session Cookie

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo