CVE-2020-4888

IBM QRadar SIEM 7.4.0 to 7.4.2 Patch 1 and 7.3.0 to 7.3.3 Patch 7 could allow a remote attacker to execute arbitrary commands on the system, caused by insecure deserialization of user-supplied content by the Java deserialization function. By sending a malicious serialized Java object, an attacker could exploit this vulnerability to execute arbitrary commands on the system. IBM X-Force ID: 190912.

Published: 2021-01-28 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-4888 is rated High Risk (66.1/100): CVSS High severity, with high exploitation likelihood (EPSS 40.54%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. 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-2020-4888

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 2026-01-30 43.72% 40.54% -3.18%
2 2025-11-21 50.27% 43.72% -6.55%
3 2025-11-18 — 50.27% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-4888

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/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:L)
A normal user session is enough; they don’t have to be admin.
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.
 2.8 5.9 [email protected]
6.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L 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:L)
A normal user session is enough; they don’t have to be admin.
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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 3.4 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/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:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2020-4888

Affected software / configurations for CVE-2020-4888

Vendor Product Version Raw CPE
ibm qradar_security_information_and_event_manager 7.3.0 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.0:-:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.1 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.1:-:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.1 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.1:p3:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.1 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.1:p4:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.1 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.1:p5:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.1 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.1:p6:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.2:-:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.2:interim_fix_01:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.2:interim_fix_02:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.2:p1:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.2:p2:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.2:p3:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.2:p4:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.3 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:-:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.3 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p1:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.3 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p2:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.3 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p3:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.3 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p4:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.3.3 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p5:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.4.0 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.4.0:-:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.4.0 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.4.0:p1:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.4.0 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.4.0:p2:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.4.1 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.4.1:-:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.4.1 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.4.1:patch1:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.4.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.4.2:-:*:*:*:*:*:*
ibm qradar_security_information_and_event_manager 7.4.2 cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.4.2:p1:*:*:*:*:*:*

References for CVE-2020-4888

cvelogic Threat Intelligence