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CVE-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…
Medium5.9EPSS 1.5%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 25% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Weakness
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.bouncycastle:bc-fipsGHSA-6xx3-rg99-gc3p (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-ext-jdk15onGHSA-6xx3-rg99-gc3p (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-ext-jdk16GHSA-6xx3-rg99-gc3p (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-jdk14GHSA-6xx3-rg99-gc3p (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-jdk15GHSA-6xx3-rg99-gc3p (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-jdk15onGHSA-6xx3-rg99-gc3p (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-jdk15to18GHSA-6xx3-rg99-gc3p (opens in a new tab)
- Mavenorg.bouncycastle:bcprov-jdk16GHSA-6xx3-rg99-gc3p (opens in a new tab)
- NuGetBouncyCastleGHSA-6xx3-rg99-gc3p (opens in a new tab)
References (4)
- https://www.bouncycastle.org/releasenotes.html (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/bcgit/bc-java/wiki/CVE-2020-15522 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522 (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20210622-0007/ (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-6xx3-rg99-gc3p (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-15522)Record last updated .