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CVE-2019-4261· NVD / CVE Program· CNA ibm

IBM WebSphere MQ V7.1, 7.5, IBM MQ V8, IBM MQ V9.0LTS, IBM MQ V9.1 LTS, and IBM MQ V9.1 CD are vulnerable to a denial of service attack caus

IBM WebSphere MQ V7.1, 7.5, IBM MQ V8, IBM MQ V9.0LTS, IBM MQ V9.1 LTS, and IBM MQ V9.1 CD are vulnerable to a denial of service attack caused by specially crafted messages. IBM X-Force ID: 160013.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded
Published
Aug 5, 2019
Updated
Jun 16, 2026
EPSS
2.4% · 83th percentile
CWE
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Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.4%

CNA vs NVD score

NVD
6.5
CNA · ibm
4.3
2.2 point gap

CVSS:3.0/UI:N/A:L/C:N/I:N/AC:L/AV:N/S:U/PR:L/RL:O/RC:C/E:U

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
ibmmq
ibmwebsphere mq

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ibm mq8.0.0.0 and later · up to 8.0.0.11 inclusive
  • ibm mq9.0.0.0 and later · up to 9.0.0.6 inclusive
  • ibm mq9.1.0 and later · up to 9.1.2 inclusive
  • ibm mq9.1.0.0 and later · up to 9.1.0.2 inclusive
  • ibm websphere mq7.1.0.0 and later · up to 7.1.0.9 inclusive
  • ibm websphere mq7.5 and later · up to 7.5.0.9 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

  • IBM MQ

    • 9.0.0.1, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.0.4, 8.0.0.5, 8.0.0.6, 8.0.0.7, 9.0.0.2, 8.0.0.8, 8.0.0.9, 9.0.0.3 … (+12)affected

Same product

ibm: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-4682IBM MQ 7.5, 8.0, 9.0, 9.1, 9.2 LTS, and 9.2 CD could allow a remote attacker to execute arbitrary code on the system, caused by an unsafe de
    41Plan
  • CVE-2026-10027IBM MQ queue manager is vulnerable to unauthenticated remote code execution
    39Monitor
  • CVE-2026-12351IBM MQ is vulnerable to unauthenticated remote code execution via JNDI injection
    39Monitor
  • CVE-2022-22489IBM MQ 8.0, (9.0, 9.1, 9.2 LTS), and (9.1 and 9.2 CD) are vulnerable to an XML External Entity Injection (XXE) attack when processing XML da
    37Monitor
  • CVE-2026-11725IBM MQ queue manager is vulnerable to privilege escalation
    35Monitor
  • CVE-2026-11378IBM MQ queue manager is vulnerable to remote code execution
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

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CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records