CVE-2015-7940: Moderate severity vulnerability that affects org.bouncycastle:bcprov-jdk14 and org.bouncycastle:bcprov-jdk15

October 17, 2018 (updated September 12, 2025)

The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an “invalid curve attack.”

References

github.com/advisories/GHSA-4mv7-cq75-3qjm
nvd.nist.gov/vuln/detail/CVE-2015-7940
usn.ubuntu.com/3727-1
www.oracle.com/security-alerts/cpuapr2020.html
www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html

Code Behaviors & Features

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