CVE-2026-12118
IBM webMethods Integration could allow an unauthenticated remote attacker to execute arbitrary code on the system due to the deserialization of untrusted data
IBM webMethods Integration (on prem) 10.15, 10.11 could allow an unauthenticated remote attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
IBM webMethods Integration could allow an unauthenticated remote attacker to execute arbitrary code on the system due to the deserialization of untrusted data
IBM webMethods Integration (on prem) 10.15, 10.11 could allow an unauthenticated remote attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
- Record
CVE-2026-12118- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2026-51200
IBM webMethods Integration (on prem) 10.15, 10.11 could allow an unauthenticated remote attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
- Record
EUVD-2026-51200- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9597-g68j-5wfj
IBM webMethods Integration (on prem) 10.15, 10.11 could allow an unauthenticated remote attacker...
IBM webMethods Integration (on prem) 10.15, 10.11 could allow an unauthenticated remote attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
- Record
GHSA-9597-g68j-5wfj- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
IBM webMethods Integration (on prem) 10.15, 10.11 could allow an unauthenticated remote attacker to execute arbitrary code on the system due to the deserialization of untrusted data.
- Record
CVE-2026-12118- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | uday952/CVE-2026-12118-POC- | 2026-10-29 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-12118 is a critical vulnerability (CVSS 9.8) in Ibm Webmethods Integration (on Prem), published July 30, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. No source names a fixed version.