How severe is CVE-2020-4280?

CVE-2020-4280 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-4280 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4280?

CVE-2020-4280 primarily affects Ibm Qradar Security Information And Event Manager. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4280?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-4280 published?

CVE-2020-4280 was published on 2020-10-08 and last updated on 2026-06-17.

CVE-2020-4280

CVE-2020-4280 is a high-severity vulnerability in Ibm Qradar Security Information And Event Manager with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 73% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ibm Qradar Security Information And Event Manager
Published: 2020-10-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-4280?: 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.
How severe is CVE-2020-4280?: CVE-2020-4280 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-4280 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4280?: CVE-2020-4280 primarily affects Ibm Qradar Security Information And Event Manager. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4280?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-4280 published?: CVE-2020-4280 was published on 2020-10-08 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:*:*:*:*:general_availability:*:*:*
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p1:*:*:*:*:*:*
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p2:*:*:*:*:*:*
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p3:*:*:*:*:*:*
cpe:2.3:a:ibm:qradar_security_information_and_event_manager:7.3.3:p4:*:*:*:*:*:*

More vulnerabilities in Ibm Qradar Security Information And Event Manager

CVE-2021-38869 — Critical (CVSS 9.8): IBM QRadar SIEM 7.3, 7.4, and 7.5 in some situations may not automatically log users out after they exceede their idle…
CVE-2020-4979 — Critical (CVSS 9.8): IBM QRadar SIEM 7.3 and 7.4 is vulnerable to insecure inter-deployment communication. An attacker that is able to…
CVE-2014-7169 — Critical (CVSS 9.8): GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values…
CVE-2014-6271 — Critical (CVSS 9.8): GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables,…
CVE-2014-3062 — Critical (CVSS 9.3): Unspecified vulnerability in IBM Security QRadar SIEM 7.1 MR2 and 7.2 MR2 allows remote attackers to execute arbitrary…
CVE-2025-33117 — Critical (CVSS 9.1): IBM QRadar SIEM 7.5 through 7.5.0 Update Package 12 could allow a privileged user to modify configuration files that…

All CVEs affecting Ibm Qradar Security Information And Event Manager →

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities

CVE-2026-41104 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Planetary Computer Pro allows an unauthorized attacker to disclose…
CVE-2026-43633 — Critical (CVSS 10.0): HestiaCP versions 1.9.0 through 1.9.4 contain a deserialization vulnerability in the web terminal component caused by a…
CVE-2026-33819 — Critical (CVSS 10.0): Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
CVE-2026-20131 — Critical (CVSS 10.0): A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could…
CVE-2026-25632 — Critical (CVSS 10.0): EPyT-Flow is a Python package designed for the easy generation of hydraulic and water quality scenario data of water…
CVE-2025-14931 — Critical (CVSS 10.0): Hugging Face smolagents Remote Python Executor Deserialization of Untrusted Data Remote Code Execution Vulnerability.…

Browse all CWE-502 (Deserialization of Untrusted Data) vulnerabilities →