CVE-2023-42031 | IBM CICS TX denial of service

IBM TXSeries for Multiplatforms, 8.1, 8.2, and 9.1, CICS TX Standard CICS TX Advanced 10.1 and 11.1 could allow a privileged user to cause a denial of service due to uncontrolled resource consumption. IBM X-Force ID: 266016.

Published: 2023-10-25 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-42031 is rated Moderate Risk (41.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.03%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-42031

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.09% 1.03% +0.93%
2 2025-11-21 0.28% 0.09% -0.18%
3 2025-11-18 — 0.28% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-42031

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 3.6 [email protected]
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 3.6 [email protected]

Weakness enumeration for CVE-2023-42031

Affected software / configurations for CVE-2023-42031

Vendor Product Version Raw CPE
ibm txseries_for_multiplatforms 8.1 cpe:2.3:a:ibm:txseries_for_multiplatforms:8.1:*:*:*:*:*:*:*
ibm txseries_for_multiplatforms 8.2 cpe:2.3:a:ibm:txseries_for_multiplatforms:8.2:*:*:*:*:*:*:*
ibm txseries_for_multiplatforms 9.1 cpe:2.3:a:ibm:txseries_for_multiplatforms:9.1:*:*:*:*:*:*:*
ibm cics_tx 10.1 cpe:2.3:a:ibm:cics_tx:10.1:*:*:*:advanced:*:*:*
ibm cics_tx 11.1 cpe:2.3:a:ibm:cics_tx:11.1:*:*:*:advanced:*:*:*
ibm cics_tx 11.1 cpe:2.3:a:ibm:cics_tx:11.1:*:*:*:standard:*:*:*

References for CVE-2023-42031

cvelogic Threat Intelligence