CVE-2020-4280

Name: CVE-2020-4280
Creator: NVD / NIST
Published: 2020-10-08T14:15:12.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 73.45%

Last modified Jun 17, 2026

CVE-2020-4280 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. IBM QRadar SIEM 7.3 and 7.4 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. EPSS estimates a 73.45% chance of exploitation in the next 30 days.

Description

IBM QRadar SIEM 7.3 and 7.4 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: 176140.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

73.45%

99.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions	Update
Ibm	Qradar Security Information And Event Manager	>= 7.3.0, <= 7.3.3	—
Ibm	Qradar Security Information And Event Manager	>= 7.4.0, <= 7.4.1	—
Ibm	Qradar Security Information And Event Manager	7.3.3	P1

References

http://packetstormsecurity.com/files/159589/QRadar-RemoteJavaScript-Deserialization.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Oct/18Exploit, Mailing List, Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/176140VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6344079Patch, Vendor Advisory
http://packetstormsecurity.com/files/159589/QRadar-RemoteJavaScript-Deserialization.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2020/Oct/18Exploit, Mailing List, Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/176140VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6344079Patch, Vendor Advisory

Timeline

Published: Oct 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4280?

How severe is CVE-2020-4280?

CVE-2020-4280 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 73.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4280?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-4280?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST