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CVE-2026-18152

HIGH 7.4

Published 2026-09-22 · Last modified 2026-09-23

IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow a remote attacker to forge validly-signed messages due to improper verification of cryptographic signatures.

ELEVATED IMPACT

Severe if exploited (CVSS 7.4), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 7th percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

7.4CVSS 3.1 · HIGH

  • ConfidentialityNone
  • IntegrityHigh
  • AvailabilityNone

What an attacker needs

  • ⚠Access: Must sit on the same / adjacent network
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

Test against your own equipment

curl -s https://vulnpedia.com/cve/CVE-2026-18152/poc.jsonMachine-readable PoC index for this CVE (for automation).

Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-18152/poc.json

Affected

Vendors Ibm Redhat

Products Financial Transaction Manager (Ftm) For Redhat Openshift Financial Transaction Manager Openshift

Weakness (CWE)

  • CWE-347: Improper Verification of Cryptographic Signature

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Known Affected Software Configurations

VendorProductVersion range
IbmFinancial Transaction Manager≥ 4.0.7.0 and < 4.0.11.0
IbmFinancial Transaction Manager4.0.6.0
IbmFinancial Transaction Manager4.0.6.0
IbmFinancial Transaction Manager4.0.6.0
IbmFinancial Transaction Manager4.0.6.0
IbmFinancial Transaction Manager4.0.6.0
IbmFinancial Transaction Manager4.0.6.0
IbmFinancial Transaction Manager4.0.6.0

All CVSS metrics

  • HIGH 7.4 v3.1 · CNA Primary
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
  • HIGH 7.4 v3.1 · NVD Secondary
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
  • HIGH 7.5 v3.1 · NVD Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Patches & mitigations

Sources: NVD · CVE.org · EPSS