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Fencer Vulns
high 7.5

CVE-2019-15026 json

memcached 1.5.16, when UNIX sockets are used, has a stack-based buffer over-read in conn_to_str in memcached.c.

published 2019-08-30 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6113

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

memcached 1.5.16, when UNIX sockets are used, has a stack-based buffer over-read in conn_to_str in memcached.c.

Patch / fix

  • memcached Debian 14, Debian 13, Debian 12 1.5.17-1

debian advisories DEBIAN-CVE-2019-15026

  • memcached Ubuntu 16.04 LTS 1.4.25-2ubuntu1.5
  • memcached Ubuntu 18.04 LTS 1.5.6-0ubuntu1.2

ubuntu advisories UBUNTU-CVE-2019-15026

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kibana OpenStack Cloud 7 4.6.3-5.1
  • ansible OpenStack Cloud 7 2.2.3.0-12.2
  • grafana OpenStack Cloud 7 4.6.5-1.14.1
  • memcached OpenStack Cloud 7 1.5.17-3.6.1
  • python-py OpenStack Cloud 7 1.8.1-11.12.1
  • zookeeper OpenStack Cloud 7 3.4.10-6.1
  • crowbar-ha OpenStack Cloud 7 4.0+git.1585316203.d6ad2c8-4.52.4
  • keepalived OpenStack Cloud 7 2.0.19-1.8.1

suse advisories SUSE-RU-2020:2072-1SUSE-SU-2020:1381-1SUSE-SU-2020:1190-1SUSE-SU-2020:1066-1SUSE-SU-2020:0843-1

  • memcached openSUSE Leap 15.1 1.5.6-lp151.4.3.1

opensuse advisories openSUSE-SU-2020:0721-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-15026 updated cvss 5.3

memcached: stack-based buffer over-read in conn_to_str in memcached.c

  • Red Hat Enterprise Linux 8 memcached Red Hat OpenStack Platform 10 (Newton) memcached Red Hat OpenStack Platform 13 (Queens) memcached
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 14 (Rocky) memcached
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 6 memcached Red Hat Enterprise Linux 7 memcached
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.64% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.