CVE-2018-20402: n/a vulnerability

CVE-2018-20402: Safe Software FME Server through 2018.1 creates and enables three additional accounts in addition to the in...

Safe Software FME Server through 2018.1 creates and enables three additional accounts in addition to the initial administrator account. The passwords to the three accounts are the same as the usernames, which are guest, user, and author. Logging in with these accounts will grant any user the default privilege roles that were also created for each of the accounts.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 02:21 UTC (UTC+00:00)

Security readout for executives and security teams

FME Server through 2018.1 reportedly shipped with three enabled extra accounts whose passwords matched their usernames: guest, user, and author. If left unchanged, someone could sign in using those accounts and receive their default roles. The source bundle does not provide CVSS, a patch identifier, or evidence of active exploitation. Exposure is most likely where FME Server through 2018.1 remains deployed and the default guest, user, or author accounts are still enabled or unchanged. Internet-facing administration or login portals increase urgency, but the bundle does not define exact deployment scope. Treat this as urgent for any legacy or internet-reachable FME Server. The work is mainly configuration review, account hardening, and vendor-guidance verification, with no confirmed active exploitation in the provided sources. Mitigation focus: Review Safe Software guidance for supported remediation or upgrade direction.; Disable unused guest, user, and author accounts where operationally safe.; Change any remaining default passwords immediately..

Prepared: Jun 6, 2026, 22:09 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 23, 2018, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

1Source links

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No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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