CVE-2023-42027Network attack vector

Unauthorized state changes via undisclosed CSRF flaw

Published Nov 2, 2023 · Updated Sep 5, 2024

Cross-site request forgery in IBM CICS TX and TXSeries allows remote attackers to submit unauthorized actions through a trusted user. IBM has not published the affected web component, request endpoint, or missing anti-CSRF validation that accepts the forged request. Exploitation requires user interaction in a trusted session, and IBM bounds the reported consequence to low-integrity modification without disclosure or interruption.

CVSS severity4.3
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Cross-site request forgery in IBM CICS TX and TXSeries allows remote attackers to submit unauthorized actions through a trusted user. IBM has not published the affected web component, request endpoint, or missing anti-CSRF validation that accepts the forged request. Exploitation requires user interaction in a trusted session, and IBM bounds the reported consequence to low-integrity modification without disclosure or interruption.

The record

CVE
CVE-2023-42027
Published
Nov 2, 2023
Updated
Sep 5, 2024
Vendor
IBM
Product
CICS TX Standard
Classifications
CWE-352, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · CICS TX Standardversion=11.1
IBM · CICS TX Advancedversion=10.1, 11.1
IBM · TXSeries for Multiplatformsversion=8.1, 8.2, 9.1

Published CVSS scores

4.3IBM CorporationCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204User Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo