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No exploitation reportedAwaiting NVD analysis

CVE-2026-11376

IBM MQ is affected by a denial of service vulnerability

No exploitation reported by the sources we read.

  • Published2026-11-04
  • WeaknessCWE-190

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to an integer overflow when processing subscription requests with crafted buffer size values.

Timeline

dates in UTC
  1. 2026-11-0420:26CVE publishedCNA

Versions per branch

Products declared by the CNA

As ibm, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • IBM MQ
    Affected
    • ≥ 9.2.0.0, ≤ 9.2.0.44no fix statedsemver
    • ≥ 9.3.0.0, ≤ 9.3.0.42no fix statedsemver
    • ≥ 9.4.0.0, ≤ 9.4.0.26no fix statedsemver
    • ≥ 9.4.0.0, ≤ 9.4.5.1no fix statedsemver
    • ≥ 10.0.0.0, ≤ 10.0.0.5no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-04

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-11376 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.18.82026-11-04
  • NVDCVSS 3.18.8read 2026-11-04
  • CNAweakness (CWE)CWE-1902026-11-04
  • NVDweakness (CWE)CWE-190read 2026-11-04

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-04
Last Modified
2026-11-04
NVD status
Awaiting Analysis

Frequently asked questions

What is CVE-2026-11376?

IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to an integer overflow when processing subscription requests with crafted buffer size values.

Is CVE-2026-11376 actively exploited?

Active exploitation of CVE-2026-11376 has not been confirmed.

What is the CVSS score for CVE-2026-11376?

CVE-2026-11376 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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