Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures.
Metrics
Affected Vendors & Products
Advisories
Source | ID | Title |
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EUVD-2021-1608 | Bouncy Castle BC Java before 1.66, BC C# .NET before 1.8.7, BC-FJA before 1.0.1.2, 1.0.2.1, and BC-FNA before 1.0.1.1 have a timing issue within the EC math library that can expose information about the private key when an attacker is able to observe timing information for the generation of multiple deterministic ECDSA signatures. |
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GHSA-6xx3-rg99-gc3p | Timing based private key exposure in Bouncy Castle |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 17 Jul 2025 17:15:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Bouncycastle fips Java Api
|
|
CPEs | cpe:2.3:a:bouncycastle:fips_java_api:*:*:*:*:*:*:*:* | |
Vendors & Products |
Bouncycastle legion-of-the-bouncy-castle-fips-java-api
|
Bouncycastle fips Java Api
|

Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-04T13:15:20.863Z
Reserved: 2020-07-04T00:00:00
Link: CVE-2020-15522

No data.

Status : Modified
Published: 2021-05-20T12:15:08.003
Modified: 2025-07-17T17:04:58.987
Link: CVE-2020-15522


No data.