Low 2.0Published Apr 19, 2016

CVE-2015-7511Libgcrypt 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 elec…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects gnupg libgcrypt and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 2.0 LOW (v3.0, NVD)CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-200
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

gnupg libgcrypt gnupg:libgcrypt	through 1.6.4	NVD
debian debian_linux debian:debian_linux	7.0; 8.0	NVD
canonical ubuntu_linux canonical:ubuntu_linux	12.04; 14.04; 15.10	NVD

References

References

http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.html
http://www.cs.tau.ac.IL/~tromer/ecdh/
http://www.debian.org/security/2016/dsa-3474
http://www.debian.org/security/2016/dsa-3478
http://www.securityfocus.com/bid/83253
http://www.ubuntu.com/usn/USN-2896-1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/
https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html	vendor-advisory
https://security.gentoo.org/glsa/201610-04

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.