No exploitation reportedFix available

CVE-2018-20031

No exploitation reported by the sources we read.

Published2019-03-21

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A Denial of Service vulnerability related to preemptive item deletion in lmgrd and vendor daemon components of FlexNet Publisher version 11.16.1.0 and earlier allows a remote attacker to send a combination of messages to lmgrd or the vendor daemon, causing the heartbeat between lmgrd and the vendor daemon to stop, and the vendor daemon to shut down.

Timeline

dates in UTC

2019-03-2121:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-20031?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-20031?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Flexera flexnet publisher

Branch	Affected	Fixed in	Source
11.16	≤ 11.16.1.0	no fix published	NVD

Oracle communications lsms

Branch	Affected	Fixed in	Source
13.x	≥ 13.1, ≤ 13.4	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-19-323-01 CISA1 known affected
Flexera FlexNet Publisher
FlexNet Publisher: Version 2018 R3 and prior
ICSA-19-192-05 CISA1 known affected
AVEVA Vijeo Citect and Citect SCADA Floating License Manager
Vijeo Citect and Citect SCADA Floating License Manager - Floating License Manager Version 2.3.0.0 and earlier
ICSA-19-192-07 CISA1 known affected
Schneider Electric Floating License Manager
Floating License Manager: Version 2.3.0.0 and earlier

Full record on NVD

Fix

Vendor fix CISA ICSA-19-323-01 · 1 productFlexera recommends all users using affected versions of FlexNet Publisher upgrade to Version 2018 R4 or newer as soon as possible. The updates can be obtained with a customer account at the following location (login required):
Vendor fix CISA ICSA-19-192-07 · 1 productSchneider Electric recommends users upgrade to Floating License Manager (FLM) Version 2.3.1.0 as soon as possible.
Mitigation from the vendor CISA ICSA-19-323-01 · 1 productMore information on this issue can be found at the following location on the Flexera site:
Mitigation from the vendor CISA ICSA-19-192-05 · 1 productAVEVA states that users who have deployed Floating License Manager Version 2.3.0.0 and earlier to manage their Software Licensing for Vijeo Citect or Citect SCADA (Version 7.30 and later) could be impacted.
Mitigation from the vendor CISA ICSA-19-192-05 · 1 productImpacted users should upgrade to Floating License Manager (FLM) Version 2.3.1.0 as soon as possible.
Mitigation from the vendor CISA ICSA-19-192-05 · 1 productFLM Version 2.3.1.0 is already available via SESU (Schneider Electric Software Update tool).

Advisories and patches

secuniaresearch.flexerasoftware.comVendor Advisory
www.oracle.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
FIRST EPSSEPSS score2.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2019-03-21
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-20031?

Is CVE-2018-20031 actively exploited?

Active exploitation of CVE-2018-20031 has not been confirmed. Its EPSS score was 2.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-20031?

CVE-2018-20031 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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