What is the CVSS score of CVE-2020-28052?

CVE-2020-28052 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 7.1%.

Is there a public PoC exploit available for CVE-2020-28052?

Yes, a public proof-of-concept exploit is available for CVE-2020-28052. Prioritise patching immediately. EPSS: 7.1%.

Is there a patch available for CVE-2020-28052?

Yes, a patch is available for CVE-2020-28052. Update the affected software to the latest version immediately.

Bc Java CVE-2020-28052

HIGH

2020-12-18 cve@mitre.org

Apache Java Information Disclosure Oracle Jd Edwards Enterpriseone Tools Peoplesoft Enterprise Peopletools Utilities Framework Blockchain Platform Communications Application Session Controller Bc Java Communications Cloud Native Core Network Slice Selection Function Commerce Guided Search Communications Session Report Manager Communications Session Route Manager Webcenter Portal Banking Corporate Lending Process Management Banking Credit Facilities Process Management Banking Extensibility Workbench Banking Supply Chain Finance Banking Virtual Account Management Communications Pricing Design Center Communications Messaging Server Communications Convergence Karaf Bouncycastle

8.1

CVSS 3.1 · NVD

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Vulnerability Assessment

Impact	CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 7.1% exploitation probability (EPSS)

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AnalysisAI

An issue was discovered in Legion of the Bouncy Castle BC Java 1.65 and 1.66. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

maven org.bouncycastle:bcprov-ext-jdk15on fix: 1.67

maven org.bouncycastle:bcprov-ext-jdk16 fix: 1.67

maven org.bouncycastle:bcprov-jdk14 fix: 1.67

maven org.bouncycastle:bcprov-jdk15 fix: 1.67

maven org.bouncycastle:bcprov-jdk15on fix: 1.67

maven org.bouncycastle:bcprov-jdk15to18 fix: 1.67

maven org.bouncycastle:bcprov-jdk16 fix: 1.67

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 7 packages in maven

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

An issue was discovered in Legion of the Bouncy Castle BC Java 1.65 and 1.66. The OpenBSDBCrypt.checkPassword utility method compared incorrect data when checking the password, allowing incorrect passwords to indicate they were matching with previously hashed ones that were different. Affected products include: Bouncycastle Bc-Java, Apache Karaf, Oracle Banking Corporate Lending Process Management, Oracle Banking Credit Facilities Process Management, Oracle Banking Extensibility Workbench.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Threat Intelligence Overview

EPSS Score

7.1%

Top 6% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 7.1%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +7

CVSS: +40

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:a:bouncycastle:bc-java:1.65:*:*:*:*:*:*:*

cpe:2.3:a:bouncycastle:bc-java:1.66:*:*:*:*:*:*:*

cpe:2.3:a:apache:karaf:4.3.2:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_extensibility_workbench:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_extensibility_workbench:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_extensibility_workbench:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_supply_chain_finance:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_supply_chain_finance:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_supply_chain_finance:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_virtual_account_management:14.2.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_virtual_account_management:14.3.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:banking_virtual_account_management:14.5.0:*:*:*:*:*:*:*

cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:*

cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:*

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