THREATPORT/VULNERABILITY/CVE-2020-28052
HIGH SEVERITY

CVE-2020-28052

Bc Java vulnerability

CVSS
8.1
EPSS
7.1%
EPSS pct
94th
Exploited
No known
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 vendor
Bouncycastle
Affected product
Bc Java
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-12-18

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 7.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2020-28052

  • Confirm whether Bouncycastle Bc Java is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-28052.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-28052

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-28052 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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