Enterprise API gateway (IBM DataPower) RCE can disrupt integrations and services across organizations.
CVE-2026-15781
Authenticated remote code execution in IBM DataPower Gateway via buffer overflow.
Is CVE-2026-15781 being exploited?
Not confirmed. CVE-2026-15781 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 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-15781?
CVE-2026-15781 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-2026-15781?
Not known from our data. No patch reference has been recorded for CVE-2026-15781, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-15781 affect?
CVE-2026-15781 affects IBM DataPower Gateway 10.5.0.0–10.5.0.22, IBM DataPower Gateway 10.6.0.0–10.6.0.10, IBM DataPower Gateway 10.6.1–10.6.6, IBM DataPower Gateway 11.0.0.0–11.0.0.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-15781?
Identify affected appliances, restrict/segregate access, enable strong auth, monitor logs, apply vendor updates when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can trigger a buffer overflow to execute arbitrary code and gain control of the appliance.
Immediate action required
- affected>= 10.5.0.0 and <= 10.5.0.22
- affected>= 10.6.0.0 and <= 10.6.0.10
- affected>= 10.6.1 and <= 10.6.6
- affected>= 11.0.0.0 and <= 11.0.0.2
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.