Medium 5.9Published Nov 29, 2019

CVE-2015-0837The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during mo…

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

Does this affect you?

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

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for gnupg Exploited in the last 30 days

The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."

CVSS: 5.9 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-203
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 gnupg gnupg:gnupg	before 1.4.19	NVD
gnupg libgcrypt gnupg:libgcrypt	before 1.6.3	NVD
debian debian_linux debian:debian_linux	7.0; 8.0	NVD

References

References

http://www.debian.org/security/2015/dsa-3184	third-party-advisory
http://www.debian.org/security/2015/dsa-3185	third-party-advisory
https://ieeexplore.ieee.org/document/7163050	third-party-advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html	mailing-list, vendor-advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.html	mailing-list, vendor-advisory

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.