WEBMETHODS INTEGRATION SERVER · CVE-2026-117545 · Vendor
FIX → IS_12.1_Core_Fix1 ✓ verified
IBM's bulletin (3 Nov 2026) says a remote authenticated attacker can bypass the two-factor authentication mechanism in IBM webMethods Integration Server 12.1 (on prem), CWE-287, CVSS 8.8. IBM lists no workaround. The fix is IS_12.1_Core_Fix1 or later.
first public Nov 8, 2026 · 2 sources
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Teams running on-prem IBM webMethods Integration Server 12.1 where remote users log in. An attacker needs valid credentials, and the flaw lets them get past the two-factor authentication step. Other versions are not listed by IBM; its bulletin covers supported versions only. Anyone without Integration Server 12.1 can skip it.
Not affected if no-remote-login
Who cares 2fa-bypass, enterprise, ibm-webmethods, integration-server, on-prem
IBM webMethods Integration Server 12.1 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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Upgrade to IS_12.1_Core_Fix1
Apply IS_12.1_Core_Fix1 or later through IBM webMethods Update Manager, following the fix readme.