Low

CVE-2026-12730 — Improper Validation of Certificate with Host Mismatch in IBM Business Automation Workflow containers

IBM Business Automation Workflow containers and traditional 26.0.0, 25.0.0 through 25.0.0 Interim Fix 005, 24.0.1 through 24.0.1 Interim Fix 007, and 24.0.0 through 24.0.0 Interim Fix 009 IBM Business Automation Workflow fails to properly verify that the hostname matches the server certificate potentially allowing connections to an attacker-controlled server.

Published Aug 5, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: ibm

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.17%

ahead of 5% of scored CVEs · Oct 15, 2026

Affects

Ibm

Business Automation Workflow and 1 more

CVSS base

3.8

Low · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Ibm Business Automation Workflow, Ibm Business Automation Workflow containers and traditional).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Ibm	Business Automation Workflow	version 25.0.0-if001version 24.0.1-if003version 24.0.1-if004version 24.0.1-if005version 24.0.1-if006version 24.0.1-if007version 25.0.0version 24.0.0 and 17 more version 25.0.0-if002version 25.0.0-if003version 25.0.0-if004version 25.0.0-if005version 26.0.0version 24.0.1-if002version 24.0.0-if001version 24.0.0-if002version 24.0.0-if003version 24.0.0-if004version 24.0.0-if005version 24.0.0-if006version 24.0.0-if007version 24.0.0-if008version 24.0.0-if009version 24.0.1version 24.0.1-if001	Vulnerable	NIST National Vulnerability Database
Ibm	Business Automation Workflow containers and traditional	version 26.0.0≥ 25.0.0 and ≤ 25.0.0 Interim Fix 005≥ 24.0.1 and ≤ 24.0.1 Interim Fix 007≥ 24.0.0 and ≤ 24.0.0 Interim Fix 009	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

High

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
3.8	CVSS 3.1	Low	1.2	2.5	psirt@us.ibm.com via NIST National Vulnerability Database
3.8	CVSS 3.1	Low	—	—	ibm via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N (score shown at the top: psirt@us.ibm.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-297

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
Affected products added · ibm/business automation workflow containers and traditional
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 3.8
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 5, 2026 · ibm

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

1 on the record

www.ibm.com/support/pages/node/7282596
Vendor Advisory, vendor-advisory, patch, NIST National Vulnerability Database

Elsewhere on this site

Ibm
every CVE for this vendor

CWE-297
other pages naming this weakness

Related CVEs (same products)

High CVE-2026-12752 Multiple security vulnerabilities addressed with IBM Business Automation Workflow August 2026 Sep 15, 2026
Medium CVE-2026-12742 Multiple secuirty vulnerabilies addressed with IBM Business Automation Workflow August 2026 Sep 15, 2026
High CVE-2026-12756 Multiple secuirty vulnerabilies addressed with IBM Business Automation Workflow August 2026 Sep 14, 2026
High CVE-2026-13107 Multiple secuirty vulnerabilies addressed with IBM Business Automation Workflow August 2026 Sep 14, 2026
Medium CVE-2026-1248 IBM Business Automation Workflow information leak May 27, 2026
High CVE-2025-13096 XML eXternal Entity injection (XXE) vulnerability affect IBM Business Automation Workflow - Feb 2, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-12730 is "Improper Validation of Certificate with Host Mismatch in IBM Business Automation Workflow containers", rated Low. It affects Business Automation Workflow (Ibm); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 3.8 describes technical severity. EPSS 0.17% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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