Remote Code Execution Vulnerability in IBM webMethods Integration Products
CVE-2026-12118

9.8CRITICAL

Key Information:

Vendor

IBM
Status
Webmethods Integration (on Prem)
Vendor
CVE Published:
30 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-12118?

A vulnerability in IBM webMethods Integration products allows unauthenticated remote attackers to execute arbitrary code on the system through the deserialization of untrusted data. This can lead to significant risks, making it critical for organizations using affected versions to apply security patches promptly.

Affected Version(s)

webMethods Integration (on prem) 10.15, 10.11

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-12118-POC-
Created by uday952

References

https://www.ibm.com/support/pages/node/7278857
vendor-advisorypatch

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

This vulnerability was reported to IBM by Black Lantern Security (https://www.blacklanternsecurity.com).
.