CVE-2023-45177 | IBM MQ denial of service

IBM MQ 9.0 LTS, 9.1 LTS, 9.2 LTS, 9.3 LTS and 9.3 CD is vulnerable to a denial-of-service attack due to an error within the MQ clustering logic. IBM X-Force ID: 268066.

Published: 2024-03-20 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-45177 is rated Low Risk (37/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.60%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2023-45177

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 0.10% 0.60% +0.50%
2 2025-11-21 0.39% 0.10% -0.29%
3 2025-11-18 — 0.39% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-45177

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
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.
 1.6 3.6 [email protected]

Weakness enumeration for CVE-2023-45177

Affected software / configurations for CVE-2023-45177

Vendor Product Version Raw CPE
ibm mq >= 9.0.0.0, < 9.0.0.21 cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
ibm mq >= 9.1.0.0, < 9.1.0.18 cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
ibm mq >= 9.2.0.0, < 9.2.0.20 cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*
ibm mq >= 9.3.0, < 9.3.4 cpe:2.3:a:ibm:mq:*:*:*:*:continuous_delivery:*:*:*
ibm mq >= 9.3.0.0, <= 9.3.0.10 cpe:2.3:a:ibm:mq:*:*:*:*:lts:*:*:*

References for CVE-2023-45177

cvelogic Threat Intelligence