CVE catalog
CVE-2015-7940
bouncycastle: CVE-2015-7940
- Severity
- Low · CVSS 3.7
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 4.82% · Oct 25, 2026
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."
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | bouncycastle | sid | 1.86.2-1 | fixed |
| Debian | bouncycastle | forky | 1.86-1 | fixed |
| Debian | bouncycastle | trixie | 1.80-3 | fixed |
| Debian | bouncycastle | bookworm | 1.72-2 | fixed |
| Ubuntu | bouncycastle | 14.04 | 1.48+dfsg-2 | vulnerable |
| Ubuntu | bouncycastle | 14.04 | 1.49+dfsg-2 | vulnerable |
| Ubuntu | bouncycastle | 14.04 | 1.49+dfsg-2ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | bouncycastle | source | sid | 1.51-1 | not yet assigned | Not reported | [802671] |
| Debian | bouncycastle | source | forky | 1.51-1 | not yet assigned | Not reported | [802671] |
| Debian | bouncycastle | source | trixie | 1.51-1 | not yet assigned | Not reported | [802671] |
| Debian | bouncycastle | source | bookworm | 1.51-1 | not yet assigned | Not reported | [802671] |
| Ubuntu | bouncycastle | deb | 14.04 | 1.49+dfsg-2ubuntu0.1 | Not reported | UBUNTU-CVE-2015-7940 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libbcjmail-java]Fixed
Source package: [bouncycastle]
Details (2)
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
- [libbcmail-java]Fixed
Source package: [bouncycastle]
Details (2)
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
- [libbcpg-java]Fixed
Source package: [bouncycastle]
Details (2)
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
- [libbcpkix-java]Fixed
Source package: [bouncycastle]
Details (2)
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
- [libbcprov-java]Fixed
Source package: [bouncycastle]
Details (2)
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
- [libbctls-java]Fixed
Source package: [bouncycastle]
Details (2)
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
- [libbcutil-java]Fixed
Source package: [bouncycastle]
Details (2)
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
1.72-2· all · bookwormFixed · Fixed:
1.51-1dsa · bouncycastle · debian · bookworm; dsa · bouncycastle · debian · 12
[Debian 13 (Trixie)]
- [libbcjmail-java]Fixed
Source package: [bouncycastle]
Details (2)
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
- [libbcmail-java]Fixed
Source package: [bouncycastle]
Details (2)
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
- [libbcpg-java]Fixed
Source package: [bouncycastle]
Details (2)
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
- [libbcpkix-java]Fixed
Source package: [bouncycastle]
Details (2)
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
- [libbcprov-java]Fixed
Source package: [bouncycastle]
Details (2)
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
- [libbctls-java]Fixed
Source package: [bouncycastle]
Details (2)
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
- [libbcutil-java]Fixed
Source package: [bouncycastle]
Details (2)
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
1.80-3· all · trixieFixed · Fixed:
1.51-1dsa · bouncycastle · debian · 13
Observed:
References
- [https://access.redhat.com/errata/RHSA-2016:2036]
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_10486-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2015-7940]
- [https://osv.dev/vulnerability/DLA-361-1]
- [https://osv.dev/vulnerability/DSA-3417-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2015-7940]
- [https://security-tracker.debian.org/tracker/CVE-2015-7940]
- [https://wid.cert-bund.de/.well-known/csaf/white/2016/wid-sec-w-2024-3616.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]