Quick answers
- Is CVE-2026-18153 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18153 being exploited in the wild.
- How severe is CVE-2026-18153?
- Medium severity, with a CVSS score of 5.4, published 22 September 2026.
- Which products and versions are affected?
- IBM Financial Transaction Manager 4.x.
- Is there a fix for CVE-2026-18153?
- 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-2026-18153 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-18153?
- Check whether you run IBM Financial Transaction Manager at an affected version. 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
This vulnerability stems from the use of hardcoded cryptographic keys and initialization vectors in FTM's authentication mechanism (CWE-327). An authenticated network attacker can leverage these static credentials to forge authentication tags and obtain sensitive information without user interaction. A fix is available from IBM.
Affected products
- IBM Financial Transaction Manager 4.x
Timeline
- 2026-09-22: disclosed