Enterprise API management product (IBM API Connect) is affected; authentication bypass allowing configuration tampering can disrupt services and enable persistent compromise across organizations.
CVE-2026-17333
Auth bypass in IBM API Connect enabling unauthorized config injection
Is CVE-2026-17333 being exploited?
Not confirmed. CVE-2026-17333 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-17333?
CVE-2026-17333 is rated High with a CVSS score of 8.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-17333?
Yes. A fix has been recorded for CVE-2026-17333. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-17333 affect?
CVE-2026-17333 affects IBM API Connect 10.0.8.0 - 10.0.8.12, IBM API Connect 12.1.0.0 - 12.1.1.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-17333?
Apply IBM PSIRT updates immediately; restrict management interfaces and monitor for suspicious config changes.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote auth bypass via improper certificate validation allows attackers to inject unauthorized configuration changes, enabling persistence, service disruption, or added backdoors.
Immediate action required
- affected>= 12.1.0.0 and <= 12.1.1.2
- affected>= 10.0.8.0 and <= 10.0.8.12
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
timeline
- 7 Nov 2026Published
- 7 Nov 2026CVE record last updated · same day later
- 8 Nov 2026Analysed by vulneraibility.com · 1 day later
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.