VulnerabilityModified

CVE-2020-4280

HIGH 8.8EPSS 68.5%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 68.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.1: 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 68.52% probability · 99th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-502
Affected: ibm/qradar security information and event manager
Source: psirt@us.ibm.com

EPSS trend

EPSS moved from 68.5% on 26 October 2026 to 68.5% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.