libgcrypt: side-channel attack on ECDH with Weierstrass curves
Published Apr 19, 2016
2.0
LOWCVSS 3.0
EPSS 0.43%
Description
Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.
Affected products
No data.
Configuration 2
- 7.0
- 8.0
Configuration 3
- 12.04
- 14.04
- 15.10
No data.
Red Hat Enterprise Linux 5
libgcrypt
Not affected
Red Hat Enterprise Linux 6
libgcrypt
Not affected
Red Hat Enterprise Linux 7
libgcrypt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libgcrypt | Not affected | n/a |
| Red Hat Enterprise Linux 6 | libgcrypt | Not affected | n/a |
| Red Hat Enterprise Linux 7 | libgcrypt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
AV:L/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.43% (0.00429) | 34.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00432) | 34.28th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.02% (0.00021) | 3.16th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.21% (0.00206) | 59.45th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00206) | 58.73th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00206) | 56.72th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (14)
- http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.html vendor-advisoryx_refsource_SUSE
- http://www.cs.tau.ac.IL/~tromer/ecdh/ x_refsource_MISC
- http://www.cs.tau.ac.il/~tromer/ecdh/
- http://www.debian.org/security/2016/dsa-3474 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2016/dsa-3478 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/83253 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2896-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-7511 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1306184 Issue Tracking
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/ vendor-advisoryx_refsource_FEDORA
- https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html mailing-listx_refsource_MLISTVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-7511
- https://security.gentoo.org/glsa/201610-04 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-7511
Change history (0)
No recorded changes yet.