Incidentsby GlyphTenable outage history and postmortems
Security · Columbia, US · 32 incidents in 90 days · 97.6% implied uptime · last 5d ago
Ongoing now
Checked 2h 33m ago4h agoWe are aware of and actively investigating that after the maintenance window certain users may not be access to Cloud Security in GOV01. We will provide periodic updates as our engineers continue working on this issue.
History
About Tenable
Tenable Holdings, Inc. is a cybersecurity company based in Columbia, Maryland. Its vulnerability scanner software Nessus, developed in 1998, is one of the most widely deployed vulnerability assessment solutions in the cybersecurity industry.
The last year, day by day
Downtime, added up
Tenable: 2d 3h weighted downtime in range, category median 1h 14m.
32 incidents, 25 major or critical, 44d 17h of incident time (37d major or critical, 7d 16h partial), longest 7d, implied uptime 97.6%, between Aug 12, 2026 and Nov 9, 2026.
Across Glyph:Company profileQuarterlyPaydaysUptime
Questions
Is Tenable down right now?
Check Tenable's own status page at https://status.tenable.com for the live state. This page shows Tenable's incident history from that page; the most recent incident started 2026-11-09: "Tenable Cloud Security: Customers Site Access Issues (USGov1)".
How often does Tenable have outages?
Tenable posted 33 incidents in the last 90 days and 99 in the last year, 26 of them major or critical in the last 90 days. The median incident lasted 27h 59m.
When was Tenable's last major outage?
2026-11-09: "Tenable Cloud Security: Customers Site Access Issues (USGov1)", lasting Ongoing.
What usually causes Tenable incidents?
Where Tenable explained the cause, the most common was third-party dependency (1 incidents). Most status updates do not name a cause.