CVE-2020-4310Network attack vector

Channel-process crash via malformed data conversion

Published Jun 16, 2020 · Updated Sep 17, 2024

Denial of service in IBM MQ 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD allows remote attackers to crash an MQ channel process. The data-conversion logic processes a crafted message in a way that triggers SIGSEGV; IBM has not disclosed a finer code-level locus. No authentication or user interaction is required, but exploitation has high complexity and interrupts the affected channel process.

CVSS severity5.9
Medium
EPSS probability1.56%
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

Denial of service in IBM MQ 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD allows remote attackers to crash an MQ channel process. The data-conversion logic processes a crafted message in a way that triggers SIGSEGV; IBM has not disclosed a finer code-level locus. No authentication or user interaction is required, but exploitation has high complexity and interrupts the affected channel process.

The record

CVE
CVE-2020-4310
Published
Jun 16, 2020
Updated
Sep 17, 2024
Vendor
IBM
Product
IBM MQ
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 16, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=7.1
  2. Affected versionversion=7.5
  3. Affected versionversion=8.0
  4. Affected versionversion=9.0.LTS
  5. Affected versionversion=9.1.CD
  6. Affected versionversion=9.1.LTS

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM MQversion=7.1; version=7.5; version=8.0; version=9.0.LTS; version=9.1.CD; version=9.1.LTS

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.9IBMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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

T1499.004Application or System Exploitation

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