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HIGH

CVE-2020-28052

CVSS v3

8.1

HIGH

EPSS Score

7.2 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • org.bouncycastle:bcprov-jdk14Mavenfrom 1.65 · fixed in 1.67and 6 other packages

Vendor advisories

  • CVE-2020-28052 Red Hat Product Security303 products fixed · 3 known affected

    bouncycastle: password bypass in OpenBSDBCrypt.checkPassword utility possible

    bouncycastle as a component of Red Hat Integration Camel K 1 · bouncycastle as a component of Red Hat Integration Camel Quarkus 1 · bouncycastle as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack

  • RHSA-2024:10208 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.8 on RHEL 7 security update

  • RHSA-2021:4767 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Integration Camel Extensions for Quarkus GA security update

  • RHSA-2021:3205 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Integration Camel-K 1.4 release and security update

  • RHSA-2021:3140 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Fuse 7.9.0 release and security update

  • RHSA-2021:2755 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: EAP XP 2 security update to CVE fixes in the EAP 7.3.x base

7 more advisories

Full record on NVD

Description

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.

Technical details

Published
2020-12-18

Frequently asked questions

What is CVE-2020-28052?

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.

Is CVE-2020-28052 actively exploited?

Active exploitation of CVE-2020-28052 has not been confirmed. Its EPSS score was 7.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

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

CVE-2020-28052 has a CVSS v3 base score of 8.1 (HIGH severity).

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