CVE-2020-4280

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 73% probability of exploitation within the next 30 days (top 0.6% of all CVEs). NVD baseline CVSS 8.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
8.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 73%
CISA-KEV: Not listedEPSS: 73%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.8
EG Score
9.0(high)
EG Risk
74(Track)
EG Risk 74/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation73% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
99.4%
KEV
Not listed

Published

October 8, 2020

Last Modified

November 21, 2024

References (8)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:53 UTCEG score recompute▲ 0.20
  3. 2026-07-22 22:40 UTCEG score recompute
  4. 2026-07-22 14:05 UTCEPSS rescore
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  20. 2026-07-08 15:12 UTCEPSS rescore
  21. 2026-07-06 16:25 UTCEPSS rescore
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  1. 2026-06-25 13:48 UTCEPSS rescore
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  3. 2026-06-23 21:31 UTCEPSS rescore
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  5. 2026-06-21 14:54 UTCEPSS rescore
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  7. 2026-06-19 19:24 UTCEPSS rescore
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  9. 2026-06-17 17:50 UTCEPSS rescore
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  11. 2026-06-15 17:46 UTCEPSS rescore
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  18. 2026-06-10 22:16 UTCEPSS rescore
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  20. 2026-06-08 14:15 UTCEPSS rescore
  21. 2026-06-06 13:46 UTCEPSS rescore
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  30. 2026-06-02 20:11 UTCEPSS rescore
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  36. 2026-05-29 13:42 UTCEPSS rescore
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  39. 2026-05-27 13:39 UTCEPSS rescore
  40. 2026-05-27 13:39 UTCEPSS rescore
  41. 2026-05-26 07:17 UTCEPSS rescore
  42. 2026-05-26 07:17 UTCEPSS rescore
  43. 2026-05-23 06:53 UTCEG score recompute
  44. 2026-05-23 06:53 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2020-4280?
CVE-2020-4280 is a high vulnerability published on October 8, 2020. 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…
When was CVE-2020-4280 disclosed?
CVE-2020-4280 was first published in the National Vulnerability Database on October 8, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-4280 actively exploited?
CVE-2020-4280 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-4280?
CVE-2020-4280 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2020-4280?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-4280, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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