How severe is CVE-2025-3631?

CVE-2025-3631 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-3631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3631?

CVE-2025-3631 primarily affects Ibm Mq Appliance. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-3631?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-3631 have an EU (EUVD) identifier?

Yes. CVE-2025-3631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21175.

When was CVE-2025-3631 published?

CVE-2025-3631 was published on 2025-07-11 and last updated on 2026-06-17.

CVE-2025-3631

CVE-2025-3631 is a medium-severity vulnerability in Ibm Mq Appliance with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-21175
Weakness: CWE-416
Affected product: Ibm Mq Appliance
Published: 2025-07-11
Last modified: 2026-06-17

Description

An IBM MQ 9.3 and 9.4 Client connecting to an MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it.

Frequently asked questions

What is CVE-2025-3631?: An IBM MQ 9.3 and 9.4 Client connecting to an MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it.
How severe is CVE-2025-3631?: CVE-2025-3631 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-3631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3631?: CVE-2025-3631 primarily affects Ibm Mq Appliance. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-3631?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3631 have an EU (EUVD) identifier?: Yes. CVE-2025-3631 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21175.
When was CVE-2025-3631 published?: CVE-2025-3631 was published on 2025-07-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:mq_appliance:*:*:*:*:continuous_delivery:*:*:*
cpe:2.3:a:ibm:mq_appliance:*:*:*:*:lts:*:*:*

More vulnerabilities in Ibm Mq Appliance

CVE-2020-4682 — Critical (CVSS 9.8): IBM 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,…
CVE-2025-0975 — High (CVSS 8.8): 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 improper…
CVE-2020-4938 — High (CVSS 8.8): IBM MQ Appliance 9.1 and 9.2 is vulnerable to cross-site request forgery which could allow an attacker to execute…
CVE-2017-1318 — High (CVSS 8.8): IBM MQ Appliance 8.0 and 9.0 could allow an authenticated messaging administrator to execute arbitrary commands on the…
CVE-2019-4620 — High (CVSS 7.8): IBM MQ Appliance 8.0 and 9.0 LTS could allow a local attacker to bypass security restrictions caused by improper…
CVE-2019-4294 — High (CVSS 7.8): IBM DataPower Gateway 2018.4.1.0 through 2018.4.1.6, 7.6.0.0 through 7.6.0.15 and IBM MQ Appliance 8.0.0.0 through…

All CVEs affecting Ibm Mq Appliance →

Other CWE-416 (Use After Free) vulnerabilities

CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

Browse all CWE-416 (Use After Free) vulnerabilities →