CVE-2020-28052

mediumpriority · attend · 45EPSS 0.072 · 94 %ileexploit · PoCDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

7.22% (94th) EPSS

CVSS 6.8 · medium

Is it mine?

55 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-26

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.1

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.17.7highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-670US

exploits (2)

Public proof-of-concept and weaponised exploit code.

kurenaif/CVE-2020-28052_PoCkurenaif/CVE-2020-28052_PoCPoC · poc_in_github
madstap/bouncy-castle-generative-test-pocA generative test that would've caught CVE-2020-28052PoC · poc_in_github

affected products (55)

Products and version ranges known to be affected.

Hitachi Ops Centerall versionscert_bundDEcpe:/a:hitachi:ops_center:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat JBoss Enterprise Application Platform <7.1.8all versionscert_bundDE
Red Hat JBoss Enterprise Application Platform <7.3.6all versionscert_bundDE
Splunk Splunk Enterprise Add-on for JBoss <3.1.1all versionscert_bundDE
Red Hat JBoss Enterprise Application Platform< 7.1.8cert_bundDE
Red Hat JBoss Enterprise Application Platform< 7.3.6cert_bundDE
Splunk Splunk Enterprise≤ Add-on for JBoss <3.1.1cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
apache karaf= 4.3.2nvdUScpe:2.3:a:apache:karaf:*:*:*:*:*:*:*:*
bouncycastle bc-java= 1.65nvdUScpe:2.3:a:bouncycastle:bc-java:*:*:*:*:*:*:*:*
bouncycastle bc-java= 1.66nvdUScpe:2.3:a:bouncycastle:bc-java:*:*:*:*:*:*:*:*
oracle banking corporate lending process management= 14.2.0nvdUScpe:2.3:a:oracle:banking_corporate_lending_process_management:*:*:*:*:*:*:*:*
oracle banking corporate lending process management= 14.3.0nvdUScpe:2.3:a:oracle:banking_corporate_lending_process_management:*:*:*:*:*:*:*:*
oracle banking corporate lending process management= 14.5.0nvdUScpe:2.3:a:oracle:banking_corporate_lending_process_management:*:*:*:*:*:*:*:*
oracle banking credit facilities process management= 14.2.0nvdUScpe:2.3:a:oracle:banking_credit_facilities_process_management:*:*:*:*:*:*:*:*
oracle banking credit facilities process management= 14.3.0nvdUScpe:2.3:a:oracle:banking_credit_facilities_process_management:*:*:*:*:*:*:*:*
oracle banking credit facilities process management= 14.5.0nvdUScpe:2.3:a:oracle:banking_credit_facilities_process_management:*:*:*:*:*:*:*:*
oracle banking extensibility workbench= 14.2.0nvdUScpe:2.3:a:oracle:banking_extensibility_workbench:*:*:*:*:*:*:*:*
oracle banking extensibility workbench= 14.3.0nvdUScpe:2.3:a:oracle:banking_extensibility_workbench:*:*:*:*:*:*:*:*

showing 20 of 55

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1272Red Hat JBoss Enterprise Application Platform: Mehrere SchwachstellenDeutsch2021-03-16csaf · cert_bundDE
Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in Red Hat JBoss Enterprise Application Platform ausnutzen, um einen Denial-of-Service-Zustand auslösen, Informationen offenzulegen, Daten zu manipulieren, Sicherheitsmaßnahmen zu umgehen oder einen Cross-Site-Scripting-Angriff durchführen.
GHSA-73xv-w5gp-frxhLogic error in Legion of the Bouncy Castle BC Java2021-04-30ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2020-12-18modified 2026-06-17

references (105)

External citations — patches, advisories, analysis.

scry

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