CVE-2018-1000115
Description
Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume (Network Amplification, CWE-406) vulnerability in the UDP support of the memcached server that can result in denial of service via network flood (traffic amplification of 1:50,000 has been reported by reliable sources). This attack appear to be exploitable via network connectivity to port 11211 UDP. This vulnerability appears to have been fixed in 1.5.6 due to the disabling of the UDP protocol by default.
Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
EPSS
- Score
- 0.88002 (88.0% probability)
- Percentile
- 99.8%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
References
- RHBA-2018:2140 (access.redhat.com)vendor-advisory
- RHSA-2018:1593 (access.redhat.com)vendor-advisory
- USN-3588-1 (usn.ubuntu.com)vendor-advisory
- github.com/memcached/memcached/wiki/ReleaseNotes156
- 44264 (exploit-db.com)exploit
- twitter.com/dormando/status/968579781729009664
- 44265 (exploit-db.com)exploit
- github.com/memcached/memcached/commit/dbb7a8af90054bf4ef51f…
- RHSA-2018:2857 (access.redhat.com)vendor-advisory
- RHSA-2018:1627 (access.redhat.com)vendor-advisory
- RHSA-2018:2331 (access.redhat.com)vendor-advisory
- DSA-4218 (debian.org)vendor-advisory
- blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.h…
- github.com/memcached/memcached/issues/348
- synology.com/support/security/Synology_SA_18_07
Timeline
- ID reserved
- Record published
- Record last updated
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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:50 UTC. Sources and licenses