CVSS 3.1
8.2 highCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:NCVE-2026-17358 Multiple Vulnerabilities in IBM API Connect
High (8.2) in ibm api connect. EPSS 0.5% estimated probability of exploitation activity in the next 30 days.
On this page
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to bypass authentication across tenants due to improper authentication. Authentication checks are not sufficiently isolated between tenants, which could allow a user from one tenant to be accepted by another.
Severity
- EPSS
- 0.5% estimated probability of exploitation activity in the next 30 days; 42nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-11. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-287 Improper Authentication
- OWASP Top 10
- A07:2025 Authentication Failures
- Published
- Modified
- Assigned by
- ibm (CNA)
- NVD analysis
- Under analysis
- Record from
- the NVD, synced
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Affected
- ibm:api connect
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| IBM API Connect | from 12.1.0.0 through 12.1.1.2 |
| IBM API Connect | from 10.0.8.0 through 10.0.8.12 |
Attack patterns (CAPEC)
- CAPEC-22 Exploiting Trust in Client Likelihood: High · Severity: High
- CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data Likelihood: Medium · Severity: Very High
- CAPEC-94 Adversary in the Middle (AiTM) Likelihood: High · Severity: Very High
- CAPEC-114 Authentication Abuse Severity: Medium
- CAPEC-115 Authentication Bypass Severity: Medium
- CAPEC-151 Identity Spoofing Likelihood: Medium · Severity: Medium
- CAPEC-194 Fake the Source of Data Severity: Medium
- CAPEC-593 Session Hijacking Likelihood: High · Severity: Very High
- CAPEC-633 Token Impersonation Severity: Medium
- CAPEC-650 Upload a Web Shell to a Web Server Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.