Major incident

Tenable: Tenable Vulnerability Management / Tenable One / Nessus: Vulnerability Scan Issues Related to DNS Resolution

Affected: US-1A, us-1a, US-2A, us-2a, US-2B, us-2b, US-3A, us-3a, US-4A, us-4a, US-5A, us-5a, US07, mssp-us-1 (us07), US08, us08, AP-SYD-1, ap-syd-1, BR01, br01, CA01, ca01, FRA, IN01, fra, JP01, in01, UK-LON-1, jp01, SING, uk-lon-1, GOV01, sing, gov01

Current status of Tenable: Partial outage — live Tenable status

Timeline

1. May 20, 2026, 19:07 UTC
   investigating
   We are aware of and actively investigating issues with DNS resolution failures for checks related to log4j plugins for certain users. We will provide periodic updates as our engineers continue working on this issue.
2. May 20, 2026, 19:53 UTC
   identified
   We have identified the cause of the problem. Our engineering team is working to implement a fix for the issue.
3. May 20, 2026, 20:58 UTC
   monitoring
   We have implemented a fix for the issue and are monitoring the recovery.
4. May 21, 2026, 11:55 UTC
   resolved
   The issue has been resolved. We are sorry for the disruption and inconvenience.

Updates as published by Tenable (original).