CVE-2025-23225: IBM MQ 9.3 LTS, 9.3 CD, 9.4 LTS, and 9.4 CD could allow an authenticated user to cause a denial of service due

Routine

MEDIUM 6.5UPGRADE

CVE-2025-23225 is a medium-severity flaw (CVSS 6.5) affecting mq appliance. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM MQ 9.3 LTS, 9.3 CD, 9.4 LTS, and 9.4 CD could allow an authenticated user to cause a denial of service due to the improper handling of invalid headers sent to the queue.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-230
Published	2025-02-28
Last modified	2026-06-17

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-28 03:15 UTCPublished CVE record published
2026-06-17 08:52 UTCUpdated Record last modified

ibm mq appliance UPGRADE

Affected: <= 9.4.2 · >= 9.3.0.0 and <= 9.3.0.27 · >= 9.4.0.0 and <= 9.4.0.10

Fixed in: newer than 9.4.2

Safe to downgrade to: a release before 9.3.0.0

1. Check installed version

apt-cache policy mq-appliance || rpm -q mq-appliance || mq-appliance --version

2. UPGRADE to newer than 9.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mq-appliance

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mq-appliance

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 9.3.0.0 (Debian / Ubuntu)

apt-cache madison mq-appliance sudo apt install mq-appliance=<VERSION_BEFORE_9.3.0.0> sudo apt-mark hold mq-appliance

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mq-appliance sudo dnf downgrade mq-appliance-<VERSION_BEFORE_9.3.0.0> sudo dnf versionlock add mq-appliance

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-23225?

mq appliance: upgrade to newer than 9.4.2. Exact commands for each OS are on this page.

Is CVE-2025-23225 being exploited?

CVE-2025-23225 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-23225 affect?

CVE-2025-23225 affects mq appliance. Severity is medium (CVSS 6.5). IBM MQ 9.3 LTS, 9.3 CD, 9.4 LTS, and 9.4 CD could allow an authenticated user to cause a denial of service due to the improper handling of invalid headers sent to the queue.

How urgent is CVE-2025-23225?

Priority 32/100. No elevated risk signals yet.

Related CVEs

CVE-2025-3631 MEDIUM 6.5 UPGRADE An IBM MQ 9.3 and 9.4 Client connecting to an MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel pro
CVE-2025-14456 MEDIUM 5.9 UPGRADE IBM MQ Appliance 9.4 CD through 9.4.4.0 to 9.4.4.1
CVE-2025-0975 HIGH 8.8 UPGRADE IBM MQ 9.3 LTS, 9.3 CD, 9.4 LTS, and 9.4 CD console could allow an authenticated user to execute code due to i
CVE-2024-54173 MEDIUM 4.7 UPGRADE IBM MQ 9.3 LTS, 9.3 CD, 9.4 LTS, and 9.4 CD reveals potentially sensitive information in trace files that coul
CVE-2024-51471 MEDIUM 5.3 UPGRADE IBM MQ Appliance 9.3 LTS, 9.3 CD, and 9.4 LTS web console could allow an authenticated user to cause a denial-

References

← Back to latest CVEs