---
title: "CVE-2018-1000115: Memcached version 1.5.5 contains… | CubePath"
description: "Memcached version 1.5.5 contains an Insufficient Control of Network Message Volume (Network Amplification, CWE-406) vulnerability in the UDP support…"
language: en
source: https://cubepath.com/security/cve/CVE-2018-1000115
---

# CVE-2018-1000115: Memcached version 1.5.5 contains… | CubePath

## 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](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-1000115)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.88002 (88.0% probability)

Percentile

99.8%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [RHBA-2018:2140](https://access.redhat.com/errata/RHBA-2018:2140)  (access.redhat.com) vendor-advisory
- [RHSA-2018:1593](https://access.redhat.com/errata/RHSA-2018:1593)  (access.redhat.com) vendor-advisory
- [USN-3588-1](https://usn.ubuntu.com/3588-1/)  (usn.ubuntu.com) vendor-advisory
- [github.com/memcached/memcached/wiki/ReleaseNotes156](https://github.com/memcached/memcached/wiki/ReleaseNotes156)
- [44264](https://www.exploit-db.com/exploits/44264/)  (exploit-db.com) exploit
- [twitter.com/dormando/status/968579781729009664](https://twitter.com/dormando/status/968579781729009664)
- [44265](https://www.exploit-db.com/exploits/44265/)  (exploit-db.com) exploit
- [github.com/memcached/memcached/commit/dbb7a8af90054bf4ef51f…](https://github.com/memcached/memcached/commit/dbb7a8af90054bf4ef51f5814ef7ceb17d83d974)
- [RHSA-2018:2857](https://access.redhat.com/errata/RHSA-2018:2857)  (access.redhat.com) vendor-advisory
- [RHSA-2018:1627](https://access.redhat.com/errata/RHSA-2018:1627)  (access.redhat.com) vendor-advisory
- [RHSA-2018:2331](https://access.redhat.com/errata/RHSA-2018:2331)  (access.redhat.com) vendor-advisory
- [DSA-4218](https://www.debian.org/security/2018/dsa-4218)  (debian.org) vendor-advisory
- [blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.h…](https://blogs.akamai.com/2018/03/memcached-fueled-13-tbps-attacks.html)
- [github.com/memcached/memcached/issues/348](https://github.com/memcached/memcached/issues/348)
- [synology.com/support/security/Synology\_SA\_18\_07](https://www.synology.com/support/security/Synology%5FSA%5F18%5F07)

## Timeline

1. ID reserved Mar 5, 2018
2. Record published Mar 5, 2018
3. Record last updated Aug 5, 2024

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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, 20:02 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)