Widely used enterprise IBM MQ Appliance; pre-auth heap overflow permits remote DoS/RCE with CVSS 10.0, high-impact for enterprise messaging infrastructure.
CVE-2026-10747
Pre-auth heap overflow in IBM MQ Appliance allowing remote DoS or RCE.
Is CVE-2026-10747 being exploited?
Not confirmed. CVE-2026-10747 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 0.95% probability of exploitation in the next 30 days.
How severe is CVE-2026-10747?
CVE-2026-10747 is rated Critical with a CVSS score of 10.0. 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-2026-10747?
Not known from our data. No patch reference has been recorded for CVE-2026-10747, 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-2026-10747 affect?
CVE-2026-10747 affects IBM MQ Appliance. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-10747?
Isolate appliances, restrict network access, apply vendor patch ASAP when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Pre-auth heap buffer overflow in protocol parsing enabling remote denial-of-service or remote code execution.
Immediate action required
- affected>= 9.4 LTS and <= 9.4.0.0 to 9.4.0.25
- affected>= 9.4 CD and <= 9.4.1.0 to 9.4.5.2
- affected>= 10.0.0.0 and <= 10.0.0.1 only
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.
cisa ssvc
- exploitation
- none
- automatable
- yes
- technical impact
- total
Assessed by CISA 19 Sept 2026 (SSVC 2.0.3).
timeline
- 18 Sept 2026Published
- 19 Sept 2026CISA SSVC assessment: exploitation none · 1 day later
- 19 Sept 2026Analysed by vulneraibility.com · same day later
- 21 Sept 2026CVE record last updated · 2 days later
- Patchibm.com /support/pages/node/7284690
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- 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.