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Fencer Vulns
high 7.5

CVE-2018-1000127 json

memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and…

published 2018-03-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1850

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

memcached version prior to 1.4.37 contains an Integer Overflow vulnerability in items.c:item_free() that can result in data corruption and deadlocks due to items existing in hash table being reused from free list. This attack appear to be exploitable via network connectivity to the memcached service. This vulnerability appears to have been fixed in 1.4.37 and later.

Patch / fix

  • memcached memcached 1.4.37
  • memcached Debian 14, Debian 13, Debian 12 1.5.0-1

debian advisories DEBIAN-CVE-2018-1000127

  • memcached Ubuntu 14.04 LTS 1.4.14-0ubuntu9.3
  • memcached Ubuntu 16.04 LTS 1.4.25-2ubuntu1.4

ubuntu advisories UBUNTU-CVE-2018-1000127

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

  • memcached openstack 10 1.4.39-2.el7ost

red hat advisories RHSA-2018:2290

  • memcached openSUSE Tumbleweed 1.6.9-2.3

opensuse advisories openSUSE-SU-2024:11045-1

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-2018-1000127 updated cvss 6.5

memcached: Integer Overflow in items.c:item_free()

  • Red Hat Enterprise Linux 6 memcached Red Hat Enterprise Linux 7 memcached Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) memcached Red Hat Mobile Application Platform 4 rhmap-memcached-docker Red Hat OpenStack Platform 8 (Liberty) memcached Red Hat OpenStack Platform 9 (Mitaka) memcached
    +1 more products
    Red Hat OpenStack Platform 11 (Ocata) memcached
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 10.0 memcached 1.4.39-2.el7ost
    fixed: vendor fix RHSA-2018:2290
  • Red Hat Enterprise Linux 8 memcached Red Hat OpenStack Platform 12 (Pike) memcached Red Hat OpenStack Platform 13 (Queens) 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

2.27% chance of exploitation in the next 30 days, higher than 83% 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.