Vulnerability record
CVE-2026-17278
The short answer
CVE-2026-17278 affects IBM API Connect and is rated high (CVSS 7.5). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.66%.
What it is
IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote attacker to gain unauthorized access to sensitive API catalog and runtime configuration data due to improper authentication. Information supplied by the client is not sufficiently verified, which could allow a caller to appear as a trusted party.
Weakness: CWE-290.
Severity
7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
0.66%
Higher than 52% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Affected products
API Connect. NVD's record lists the exact affected versions.
References
- www.ibm.com/support/pages/node/7295635 Vendor Advisory
Questions
Is CVE-2026-17278 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-12. FIRST's EPSS estimates a 0.66% chance of exploitation in the next 30 days.
How do I fix CVE-2026-17278?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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