CVSS 3.1
5.9 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NCVE-2020-15522
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.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
- CWE
- CWE-362
- Published
- Modified
- Record from
- the NVD, synced
Affected
- bouncycastle:bc-csharp
- bouncycastle:bouncy_castle_fips_.net_api
- bouncycastle:fips_java_api
- bouncycastle:the_bouncy_castle_crypto_package_for_java
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bc-fips | <1.0.2.1 | 1.0.2.1 |
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bcprov-ext-jdk15on | <1.66 | 1.66 |
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bcprov-ext-jdk16 | <1.66 | 1.66 |
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bcprov-jdk14 | <1.66 | 1.66 |
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bcprov-jdk15 | <1.66 | 1.66 |
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bcprov-jdk15on | <1.66 | 1.66 |
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bcprov-jdk15to18 | <1.66 | 1.66 |
| GHSA-6xx3-rg99-gc3p | Maven | org.bouncycastle:bcprov-jdk16 | <1.66 | 1.66 |
| GHSA-6xx3-rg99-gc3p | NuGet | BouncyCastle | <1.8.7 | 1.8.7 |