---
id: "CVE-2026-117545"
page: "https://infrastack.ai/live/CVE-2026-117545"
kind: "vulnerability"
aliases: ["CVE-2026-117545"]
title: "IBM webMethods Integration Server 12.1: authenticated users can bypass two-factor authentication"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "vendor"
products: [{"name": "webMethods Integration Server", "fixed": ["IS_12.1_Core_Fix1"], "affected": "12.1 (without IS_12.1_Core_Fix1)", "ecosystem": "vendor"}]
ecosystems: []
tags: ["2fa-bypass", "enterprise", "ibm-webmethods", "integration-server", "on-prem", "vendor"]
not_affected_if: ["no-remote-login"]
published_at: "2026-11-08T17:16:37+00:00"
first_seen_at: "2026-11-08T17:22:01+00:00"
updated_at: "2026-11-08T17:25:38+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117545", "first_seen_at": "2026-11-08T17:22:01+00:00"}, {"source": "analyst", "url": "https://www.ibm.com/support/pages/node/7295298", "first_seen_at": "2026-11-08T17:25:38+00:00", "cites": ["https://www.ibm.com/support/pages/node/7295298"]}]
exploit_sources: []
---

# IBM webMethods Integration Server 12.1: authenticated users can bypass two-factor authentication

Link for people: https://infrastack.ai/live/CVE-2026-117545 (this .md is for agents)

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.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:webMethods Integration Server affected 12.1 (without IS_12.1_Core_Fix1) fixed IS_12.1_Core_Fix1

## How to check

Check whether you run IBM webMethods Integration Server 12.1 on prem and whether IS_12.1_Core_Fix1 (or later) is installed. Check in webMethods Update Manager, which lists installed fixes. If it is not installed, you are exposed.

## Fix

Apply IS_12.1_Core_Fix1 or later through IBM webMethods Update Manager, following the fix readme.

## Timeline

- 2026-11-08T17:22:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117545
- 2026-11-08T17:25:38+00:00 analyst https://www.ibm.com/support/pages/node/7295298 — Read IBM bulletin node/7295298: affected 12.1, fix IS_12.1_Core_Fix1 or later, workarounds none. Bulletin names 2FA bypass, not specific restricted functions. No exploitation or PoC seen (not searched on X; low-profile).

## Documents

- [advisory] IBM Security Bulletin: webMethods Integration Server 2FA bypass CVE-2026-117545 https://www.ibm.com/support/pages/node/7295298

## From the sources

IBM webMethods Integration Server 12.1 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_