CVE-2026-11541
Inconsistent Interpretation of HTTP Requests in CICS Transaction Gateway for Multiplatforms.
02 Description
Inconsistent Interpretation of HTTP Requests in CICS Transaction Gateway for Multiplatforms.
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.41% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 35.7% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-25.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-06-30 20:56Z4 MO AGO
- Last updated
- 2026-07-29 18:12Z3 MO AGO
- Reserved
- 2026-06-08
- Assigning CNA
- ibm
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.4)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')Base
- Data version
- 5.2
- Document digest
- c17a2ca6cdd2933f379c7d0f50a9abf3f7f3790bf48a95aafecb8edcb56bda69
05 Affected products
06 References
07 Remediation
IBM strongly recommends addressing the vulnerabilities now by downloading and applying the CICS Transaction Gateway for Multiplatforms fixes. Product VRMF APAR Remediation/First Fix CICS Transaction Gateway for Multiplatforms9.1.0.0 - PSIRT fixes for CICS Transaction Gateway for Multiplatforms will be provided only to customers covered by Extended Support and only upon request through an IBM Support case. CICS Transaction Gateway for Multiplatforms9.2.0.0 PH72094 AIX Link https://www.ibm.com/support/fixcentral/quickorder pLinux Big Endian Link https://www.ibm.com/support/fixcentral/quickorder Windows Link https://www.ibm.com/support/fixcentral/quickorder iLinux Link https://www.ibm.com/support/fixcentral/quickorder zLinux Link https://www.ibm.com/support/fixcentral/quickorder CICS Transaction Gateway for Multiplatforms9.3.0.0 PH72094 AIX Link https://www.ibm.com/support/fixcentral/quickorder pLinux Little Endian Link https://www.ibm.com/support/fixcentral/quickorder pLinux Big Endian Link https://www.ibm.com/support/fixcentral/quickorder Windows Link https://www.ibm.com/support/fixcentral/quickorder iLinux Link https://www.ibm.com/support/fixcentral/quickorder zLinux Link https://www.ibm.com/support/fixcentral/quickorder x86 Container Link https://www.ibm.com/support/fixcentral/quickorder 390x Container Link https://www.ibm.com/support/fixcentral/quickorder CICS Transaction Gateway for Multiplatforms10.1.0.0 PH72095 AIX Link