# CVE-2026-18162: IBM Financial Transaction Manager remote code execution in Function constructor

Source: https://junglewise.ai/threats/cve-2026-18162-ibm-financial-transaction-manager-ftm-for-redhat-openshift-could  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-22. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-18162 · Severity: critical · CVSS 9.8 · Published 2026-09-22

IBM Financial Transaction Manager (FTM) is a payment processing and transaction management system used by financial institutions. A remote attacker can execute arbitrary code on the system by supplying specially crafted input that is not properly validated before being used in a Function constructor, allowing complete system compromise.

Technologies: [IBM Financial Transaction Manager](https://junglewise.ai/threats/technologies/financial-transaction-manager). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-18162 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-18162 being exploited in the wild.

**How severe is CVE-2026-18162?** Critical severity, with a CVSS score of 9.8, published 22 September 2026.

**Which products and versions are affected?** IBM Financial Transaction Manager.

**Is there a fix for CVE-2026-18162?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-18162 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-18162?** Check whether you run IBM Financial Transaction Manager. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a code injection flaw in the Function constructor where user-controlled input is not properly sanitized. An unauthenticated remote attacker can craft a malicious request that exploits this improper neutralization to execute arbitrary code with the privileges of the FTM application. Exploitation does not require authentication or user interaction and can be triggered directly over the network.

## Affected products

- IBM Financial Transaction Manager

## Timeline

- 2026-09-22: disclosed

## References

- [https://www.ibm.com/support/pages/node/7288641](https://www.ibm.com/support/pages/node/7288641)

## Related threats

- [IBM Financial Transaction Manager XML external entity injection](https://junglewise.ai/threats/cve-2026-93030-ftm-4-x-all-could-allow-a-remote-authenticated-attacker-to-obtain)
- [IBM Financial Transaction Manager missing authentication in Business Rules Manager](https://junglewise.ai/threats/cve-2026-19267-ibm-financial-transaction-manager-ftm-for-redhat-openshift-is)
- [IBM Financial Transaction Manager boolean-based SQL injection](https://junglewise.ai/threats/cve-2026-19179-ibm-financial-transaction-manager-ftm-for-redhat-openshift-could)
- [IBM Financial Transaction Manager privilege escalation in container](https://junglewise.ai/threats/cve-2026-19087-ibm-financial-transaction-manager-ftm-for-redhat-openshift-could)
- [IBM Financial Transaction Manager RAG poisoning via unauthenticated runbook](https://junglewise.ai/threats/cve-2026-18875-ibm-financial-transaction-manager-ftm-for-redhat-openshift-is)