CVE-2020-4682

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.

Published: 2021-01-28 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-4682 is rated High Risk (76.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 7.69%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +4.70% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-4682

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.99% 7.69% +4.70%
2 2025-11-21 10.68% 2.99% -7.69%
3 2025-11-18 — 10.68% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-4682

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
8.1 3.0 HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 [email protected]
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2020-4682

Affected software / configurations for CVE-2020-4682

Vendor Product Version Raw CPE
ibm mq 8.0.0.0 cpe:2.3:a:ibm:mq:8.0.0.0:*:*:*:*:*:*:*
ibm mq 8.0.0.1 cpe:2.3:a:ibm:mq:8.0.0.1:*:*:*:*:*:*:*
ibm mq 8.0.0.2 cpe:2.3:a:ibm:mq:8.0.0.2:*:*:*:*:*:*:*
ibm mq 8.0.0.3 cpe:2.3:a:ibm:mq:8.0.0.3:*:*:*:*:*:*:*
ibm mq 8.0.0.4 cpe:2.3:a:ibm:mq:8.0.0.4:*:*:*:*:*:*:*
ibm mq 8.0.0.5 cpe:2.3:a:ibm:mq:8.0.0.5:*:*:*:*:*:*:*
ibm mq 8.0.0.6 cpe:2.3:a:ibm:mq:8.0.0.6:*:*:*:*:*:*:*
ibm mq 8.0.0.7 cpe:2.3:a:ibm:mq:8.0.0.7:*:*:*:*:*:*:*
ibm mq 8.0.0.8 cpe:2.3:a:ibm:mq:8.0.0.8:*:*:*:*:*:*:*
ibm mq 8.0.0.9 cpe:2.3:a:ibm:mq:8.0.0.9:*:*:*:*:*:*:*
ibm mq 8.0.0.10 cpe:2.3:a:ibm:mq:8.0.0.10:*:*:*:*:*:*:*
ibm mq 8.0.0.11 cpe:2.3:a:ibm:mq:8.0.0.11:*:*:*:*:*:*:*
ibm mq 8.0.0.12 cpe:2.3:a:ibm:mq:8.0.0.12:*:*:*:*:*:*:*
ibm mq 8.0.0.13 cpe:2.3:a:ibm:mq:8.0.0.13:*:*:*:*:*:*:*
ibm mq 8.0.0.14 cpe:2.3:a:ibm:mq:8.0.0.14:*:*:*:*:*:*:*
ibm mq 8.0.0.15 cpe:2.3:a:ibm:mq:8.0.0.15:*:*:*:*:*:*:*
ibm mq 9.0.0.0 cpe:2.3:a:ibm:mq:9.0.0.0:*:*:*:lts:*:*:*
ibm mq 9.0.0.1 cpe:2.3:a:ibm:mq:9.0.0.1:*:*:*:lts:*:*:*
ibm mq 9.0.0.2 cpe:2.3:a:ibm:mq:9.0.0.2:*:*:*:lts:*:*:*
ibm mq 9.0.0.3 cpe:2.3:a:ibm:mq:9.0.0.3:*:*:*:lts:*:*:*
ibm mq 9.0.0.4 cpe:2.3:a:ibm:mq:9.0.0.4:*:*:*:lts:*:*:*
ibm mq 9.0.0.5 cpe:2.3:a:ibm:mq:9.0.0.5:*:*:*:lts:*:*:*
ibm mq 9.0.0.6 cpe:2.3:a:ibm:mq:9.0.0.6:*:*:*:lts:*:*:*
ibm mq 9.0.0.7 cpe:2.3:a:ibm:mq:9.0.0.7:*:*:*:lts:*:*:*
ibm mq 9.0.0.8 cpe:2.3:a:ibm:mq:9.0.0.8:*:*:*:lts:*:*:*
ibm mq 9.0.0.9 cpe:2.3:a:ibm:mq:9.0.0.9:*:*:*:lts:*:*:*
ibm mq 9.0.0.10 cpe:2.3:a:ibm:mq:9.0.0.10:*:*:*:lts:*:*:*
ibm mq 9.1.0.0 cpe:2.3:a:ibm:mq:9.1.0.0:*:*:*:lts:*:*:*
ibm mq 9.1.0.1 cpe:2.3:a:ibm:mq:9.1.0.1:*:*:*:lts:*:*:*
ibm mq 9.1.0.2 cpe:2.3:a:ibm:mq:9.1.0.2:*:*:*:lts:*:*:*
ibm mq 9.1.0.3 cpe:2.3:a:ibm:mq:9.1.0.3:*:*:*:lts:*:*:*
ibm mq 9.1.0.4 cpe:2.3:a:ibm:mq:9.1.0.4:*:*:*:lts:*:*:*
ibm mq 9.1.0.5 cpe:2.3:a:ibm:mq:9.1.0.5:*:*:*:lts:*:*:*
ibm mq 9.1.0.6 cpe:2.3:a:ibm:mq:9.1.0.6:*:*:*:lts:*:*:*
ibm mq 9.2.0.0 cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:continuous_delivery:*:*:*
ibm mq 9.2.1.0 cpe:2.3:a:ibm:mq:9.2.1.0:*:*:*:continuous_delivery:*:*:*
ibm mq_appliance 9.2.0.0 cpe:2.3:a:ibm:mq_appliance:9.2.0.0:*:*:*:lts:*:*:*
ibm websphere_mq 7.5.0.0 cpe:2.3:a:ibm:websphere_mq:7.5.0.0:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.1 cpe:2.3:a:ibm:websphere_mq:7.5.0.1:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.2 cpe:2.3:a:ibm:websphere_mq:7.5.0.2:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.3 cpe:2.3:a:ibm:websphere_mq:7.5.0.3:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.4 cpe:2.3:a:ibm:websphere_mq:7.5.0.4:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.5 cpe:2.3:a:ibm:websphere_mq:7.5.0.5:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.6 cpe:2.3:a:ibm:websphere_mq:7.5.0.6:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.7 cpe:2.3:a:ibm:websphere_mq:7.5.0.7:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.8 cpe:2.3:a:ibm:websphere_mq:7.5.0.8:*:*:*:*:*:*:*
ibm websphere_mq 7.5.0.9 cpe:2.3:a:ibm:websphere_mq:7.5.0.9:*:*:*:*:*:*:*

References for CVE-2020-4682

cvelogic Threat Intelligence