CVE Tools
Sign in

CVE-2020-15522

Published: May 20, 2021Updated: Jul 17, 2025 Sources: CVE List NVD GHSA BDUCWE-362
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
1.5%
Top 28.7%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-362

Affected Products

bc-csharpbouncycastle
Library
OSS Libraries / generic-library
bouncy castle fips .net apibouncycastle
Library
OSS Libraries / generic-library
fips java apibouncycastle
Library
OSS Libraries / generic-library
the bouncy castle crypto package for javabouncycastle
Library
OSS Libraries / generic-library
org.bouncycastle:bc-fipsMavenOSS Libraries
bouncycastleoss-projectOSS Librariesaka bouncycastle
mavenpackage-ecosystemOSS Libraries
and 21 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/bcgit/bc-csharp/wiki/CVE-2020-15522
github.com
https://github.com/bcgit/bc-java/wiki/CVE-2020-15522
github.com
https://security.netapp.com/advisory/ntap-20210622-0007/
security.netapp.com
and 7 more references View all →

Timeline

Published
May 20, 2021
Last Updated
Jul 17, 2025

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-15522 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows