CVE-2020-4682 Deserialization in MQ
Remote attackers can execute arbitrary code on IBM MQ systems due to unsafe deserialization of trusted data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-4682?
CVE-2020-4682 is a high-severity unsafe deserialization vulnerability in Ibm Mq, published on 28 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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, caused by an unsafe deserialization of trusted data. An attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 186509.
Weakness: CWE-502
Which versions are affected by CVE-2020-4682?
It affects 3 products.
Products include Ibm Mq, Ibm Mq Appliance, Ibm Websphere Mq.
How do I fix CVE-2020-4682?
No fix has been published for CVE-2020-4682 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2020-4682 being exploited?
There is no known exploitation of CVE-2020-4682 in the wild and no public exploit code.
Other vulnerabilities in Ibm Mq
- CVE-2026-10575 IBM MQ queue manager is vulnerable to remote code execution
- CVE-2026-11375 IBM MQ queue manager is vulnerable to remote code execution
- CVE-2026-11378 IBM MQ queue manager is vulnerable to remote code execution
- CVE-2022-22489 XML external entity in MQ
- CVE-2026-10027 IBM MQ queue manager is vulnerable to unauthenticated remote code execution
Sources
Also known as GHSA-hmh7-p3j6-5g37.