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Vulnerability record · CVE-2018-1000127 · published 13 March 2018

CVE-2018-1000127: Memcached integer overflow vulnerability

MMemcached · Memcached

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.

7.5 CVSS 3.0 High EPSS 2.3% · top 17.7% CWE-190 · Integer overflowCWE-667 · CWE-667
7.5CVSS 3.0 base score, v2 5.0
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2018:2290 Third Party Advisory
https://github.com/memcached/memcached/commit/a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00 PatchThird Party Advisory
https://github.com/memcached/memcached/issues/271 Third Party Advisory
https://github.com/memcached/memcached/wiki/ReleaseNotes1437 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00031.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/3601-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4218 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2290 Third Party Advisory
https://github.com/memcached/memcached/commit/a8c4a82787b8b6c256d61bd5c42fb7f92d1bae00 PatchThird Party Advisory
https://github.com/memcached/memcached/issues/271 Third Party Advisory
https://github.com/memcached/memcached/wiki/ReleaseNotes1437 Release NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00031.html Mailing ListThird Party Advisory
https://usn.ubuntu.com/3601-1/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4218 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-1000127), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.