BugZero | Fortinet BugID 1240208 - Intermittent 504 Gateway Timeout errors occur when...

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Last updated on June 2nd, 2026

BugZero Risk Score
8.0 High

Overall: 8.0

Lifecycle: 10.0

Community: 3.7

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Bug Details

Priority: Unspecified
Status: Fixed
Impacted Service: Explicit ProxyModel Specific
Views: 12

Description

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDNWorkaround: Increase the fqdn-max-refresh value

Change history

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Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Last updated on June 2nd, 2026

BugZero Risk Score
8.0 High

Bug Details

Links

Top Fortinet Defects

Ready to prevent the next vendor outage?

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Last updated on June 2nd, 2026

BugZero Risk Score
8.0 High

Bug Details

Links

Top Fortinet Defects

Ready to prevent the next vendor outage?

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Last updated on June 2nd, 2026

BugZero Risk Score8.0 High

Bug Details

Links

Top Fortinet Defects

Ready to prevent the next vendor outage?

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Fortinet - Defect ID: 1240208

Intermittent 504 Gateway Timeout errors occur when using explicit proxy after upgrade due to wildcard FQDN not resolving a certain pattern of FQDN

Last updated on June 2nd, 2026

BugZero Risk Score8.0 High

Bug Details

Links

Top Fortinet Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
8.0 High

BugZero Risk Score
8.0 High