How severe is CVE-2026-12118?

CVE-2026-12118 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-12118 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-12118?

CVE-2026-12118 primarily affects Ibm Webmethods Integration. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-12118?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-12118 published?

CVE-2026-12118 was published on 2026-07-30 and last updated on 2026-08-10.

CVE-2026-12118

CVE-2026-12118 is a critical-severity vulnerability in Ibm Webmethods Integration with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ibm Webmethods Integration
Published: 2026-07-30
Last modified: 2026-08-10

Description

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.

Frequently asked questions

What is CVE-2026-12118?: 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.
How severe is CVE-2026-12118?: CVE-2026-12118 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-12118 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-12118?: CVE-2026-12118 primarily affects Ibm Webmethods Integration. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-12118?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-12118 published?: CVE-2026-12118 was published on 2026-07-30 and last updated on 2026-08-10.

References

https://www.ibm.com/support/pages/node/7278857

Affected products (2)

cpe:2.3:a:ibm:webmethods_integration:10.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:webmethods_integration:10.15:*:*:*:*:*:*:*

More vulnerabilities in Ibm Webmethods Integration

CVE-2024-45076 — Critical (CVSS 9.9): IBM webMethods Integration 10.15 could allow an authenticated user to upload and execute arbitrary files which could be…
CVE-2025-36072 — High (CVSS 8.8): IBM webMethods Integration 10.11 through 10.11_Core_Fix22, 10.15 through 10.15_Core_Fix22, and 11.1 through…
CVE-2025-36049 — High (CVSS 8.8): IBM webMethods Integration Server 10.5, 10.7, 10.11, and 10.15 is vulnerable to an XML external entity injection…
CVE-2024-45075 — High (CVSS 8.8): IBM webMethods Integration 10.15 could allow an authenticated user to create scheduler tasks that would allow them to…
CVE-2025-36202 — High (CVSS 7.5): IBM webMethods Integration 10.15 and 11.1 could allow an authenticated user with required execute Services to execute…
CVE-2025-36048 — High (CVSS 7.2): IBM webMethods Integration Server 10.5, 10.7, 10.11, and 10.15 could allow a privileged user to escalate their…

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