Home/CVE/The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easie
CVE

CVE-2015-7940

The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easie

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.".

MEDIUM · CVSS 5 EPSS 0.00972
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0

Affected Packages

3
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.bouncycastle:bcprov-jdk14 MODERATE fixed in 1.51
Maven org.bouncycastle:bcprov-jdk15 MODERATE fixed in 1.51
Maven org.bouncycastle:bcprov-jdk15on MODERATE fixed in 1.51

Scoring & Timeline

5
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
Published to NVD09 Nov 2015 · 04:59 PM

Vendor Advisories

4
suse-csafopenSUSE-SU-2024:10486-1
rhsaRHSA-2016:2035Critical
rhsaRHSA-2016:2036Important
🔗

References & Sources

21
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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