Impacts IBM enterprise IAM (Verify Access/Verify Identity Access), which is core to authentication and widely deployed; unauthorized actions here can disrupt corporate access and security.
CVE-2026-18740
Authenticated argument injection in IBM Verify Access/Identity Access allows unauthorized actions
Is CVE-2026-18740 being exploited?
Not confirmed. CVE-2026-18740 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. EPSS currently estimates a 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-18740?
CVE-2026-18740 is rated High with a CVSS score of 8.8. 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-2026-18740?
Yes. A fix has been recorded for CVE-2026-18740. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-18740 affect?
CVE-2026-18740 affects IBM Security Verify Access 10.0 through 10.0.9.2, IBM Verify Identity Access 11.0 through 11.0.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-18740?
Apply vendor updates or mitigations ASAP; restrict admin access until fixed
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote authenticated attacker can inject arguments to perform unauthorized actions, modify auth/policies, or escalate privileges in IAM.
Immediate action required
- affected>= 10.0 and <= 10.0.9.2
- affected>= 10.0 and <= 10.0.9.2
- affected>= 11.0 and <= 11.0.3
- affected>= 11.0 and <= 11.0.3
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.