IBM webMethods Integration Server is vulnerable of bypassing the two-factor authentication mechanism.
- Exploited
- No known exploitation
- Fix
- Fixed in IS_12.1_Core_Fix1
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. Product is IBM webMethods Integration Server version 12.1
- Published
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 17/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
IBM webMethods Integration Server can be attacked over the network by a user who has low-privilege login credentials, and it requires no user action. The flaw lets that attacker bypass security restrictions, including two-factor authentication, due to improper authentication.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
IBM webMethods Integration Server 12.1 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure8/25Specific setups only, reachable over the network
- Reach?/20Unknown. No tracked technology or package matched
- Severity8.8/10CVSS 8.8
- No patch0/5No signal
What would change the score
- Would score about 67 if added to CISA KEV
- Would score about 62 if CISA's SSVC rates exploitation active
- Would score about 24 if CISA's SSVC rates it automatable
What to do
Check whether your setup matches what the bug needs.
Product is IBM webMethods Integration Server version 12.1Upgrade to a fixed version: IS_12.1_Core_Fix1.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- IBM webMethods Integration Server
12.1
Evidence 1
- Patch
Corrections
None so far.
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Questions about CVE-2026-117545
Is CVE-2026-117545 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
The flaw lets an attacker bypass the two-factor authentication mechanism in IBM webMethods Integration Server, and it can also bypass some security restrictions.Source: ibm.com
Which versions are affected by CVE-2026-117545?
webMethods Integration Server: version 12.1.Source: cve.now feed data
Am I affected, and how do I check?
The facts identify IBM webMethods Integration Server version 12.1 as affected. To check a installed copy, look up its version in the product's admin console or version information and see whether it is 12.1 without the Core Fix1 level or later.Source: ibm.com
How do I fix CVE-2026-117545?
Install IS_12.1_Core_Fix1 or a later fix for webMethods Integration Server 12.1. No workaround is listed in the facts, so the fix is the step to take.Source: ibm.com