diff --git a/Diagnostics/HealthChecker/Analyzer/Security/Invoke-AnalyzerSecurityCveCheck.ps1 b/Diagnostics/HealthChecker/Analyzer/Security/Invoke-AnalyzerSecurityCveCheck.ps1
index c551d96404..3b93a6fa6c 100644
--- a/Diagnostics/HealthChecker/Analyzer/Security/Invoke-AnalyzerSecurityCveCheck.ps1
+++ b/Diagnostics/HealthChecker/Analyzer/Security/Invoke-AnalyzerSecurityCveCheck.ps1
@@ -147,6 +147,7 @@ function Invoke-AnalyzerSecurityCveCheck {
         "Jun26SU" = (NewCveEntry @("CVE-2026-42897", "CVE-2026-45500", "CVE-2026-45501", "CVE-2026-45502", "CVE-2026-45503", "CVE-2026-45504", "CVE-2026-47631") @($ex2016, $ex2019, $exSE))
         "Jul26SU" = (NewCveEntry @("CVE-2026-55005", "CVE-2026-55006", "CVE-2026-55008", "CVE-2026-55009") @($ex2016, $ex2019, $exSE))
         "Aug26SU" = (NewCveEntry @("CVE-2026-62910", "CVE-2026-62911", "CVE-2026-62912", "CVE-2026-62913", "CVE-2026-65813", "CVE-2026-62914", "CVE-2026-62915") @($ex2016, $ex2019, $exSE))
+        "Sep26SU" = ((NewCveEntry @("CVE-2026-69355", "CVE-2026-69356", "CVE-2026-69361", "CVE-2026-69375", "CVE-2026-69378", "CVE-2026-69380", "CVE-2026-69382", "CVE-2026-69641") @($ex2016, $ex2019, $exSE)) + (NewCveEntry "CVE-2026-55007" @($ex2019, $exSE)))
     }
 
     # Need to organize the list so oldest CVEs come out first.
diff --git a/Diagnostics/HealthChecker/Tests/HealthChecker.SE.Main.Tests.ps1 b/Diagnostics/HealthChecker/Tests/HealthChecker.SE.Main.Tests.ps1
index 731685aaee..ebaabcad84 100644
--- a/Diagnostics/HealthChecker/Tests/HealthChecker.SE.Main.Tests.ps1
+++ b/Diagnostics/HealthChecker/Tests/HealthChecker.SE.Main.Tests.ps1
@@ -197,7 +197,7 @@ Describe "Testing Health Checker by Mock Data Imports - Exchange SE" {
             SetActiveDisplayGrouping "Security Vulnerability"
 
             $cveTests = GetObject "Security Vulnerability"
-            $cveTests.Count | Should -Be 30
+            $cveTests.Count | Should -Be 39
 
             $downloadDomains = GetObject "CVE-2021-1730"
             $downloadDomains.DownloadDomainsEnabled | Should -Be "False"
diff --git a/Shared/Get-ExchangeBuildVersionInformation.ps1 b/Shared/Get-ExchangeBuildVersionInformation.ps1
index 21e5d19c9f..943ae65b83 100644
--- a/Shared/Get-ExchangeBuildVersionInformation.ps1
+++ b/Shared/Get-ExchangeBuildVersionInformation.ps1
@@ -131,7 +131,7 @@ function Get-ExchangeBuildVersionInformation {
                     $cuReleaseDate = "07/01/2025"
                     $supportedBuildNumber = $true
                 }
-                (GetBuildVersion $exSE "RTM" -SU "Aug26SU") { $latestSUBuild = $true }
+                (GetBuildVersion $exSE "RTM" -SU "Sep26SU") { $latestSUBuild = $true }
             }
         } elseif ($exchangeVersion.Major -eq 15 -and $exchangeVersion.Minor -eq 2) {
             Write-Verbose "Exchange 2019 is detected"
@@ -150,14 +150,14 @@ function Get-ExchangeBuildVersionInformation {
                     $cuReleaseDate = "02/10/2025"
                     $supportedBuildNumber = $true
                 }
-                (GetBuildVersion $ex19 "CU15" -SU "Aug26SU") { $latestSUBuild = $true }
+                (GetBuildVersion $ex19 "CU15" -SU "Sep26SU") { $latestSUBuild = $true }
                 { $_ -lt (GetBuildVersion $ex19 "CU15") } {
                     $cuLevel = "CU14"
                     $cuReleaseDate = "02/13/2024"
                     $supportedBuildNumber = $true
                     $orgValue = 16762
                 }
-                (GetBuildVersion $ex19 "CU14" -SU "Aug26SU") { $latestSUBuild = $true }
+                (GetBuildVersion $ex19 "CU14" -SU "Sep26SU") { $latestSUBuild = $true }
                 { $_ -lt (GetBuildVersion $ex19 "CU14") } {
                     $cuLevel = "CU13"
                     $cuReleaseDate = "05/03/2023"
@@ -254,7 +254,7 @@ function Get-ExchangeBuildVersionInformation {
                     $cuReleaseDate = "04/20/2022"
                     $supportedBuildNumber = $true
                 }
-                (GetBuildVersion $ex16 "CU23" -SU "Aug26SU") { $latestSUBuild = $true }
+                (GetBuildVersion $ex16 "CU23" -SU "Sep26SU") { $latestSUBuild = $true }
                 { $_ -lt (GetBuildVersion $ex16 "CU23") } {
                     $cuLevel = "CU22"
                     $cuReleaseDate = "09/28/2021"
@@ -752,6 +752,7 @@ function GetExchangeBuildDictionary {
                     "Jun26SU"   = "15.1.2507.69"
                     "Jul26SU"   = "15.1.2507.71"
                     "Aug26SU"   = "15.1.2507.72"
+                    "Sep26SU"   = "15.1.2507.73"
                 })
         }
         "Exchange2019" = @{
@@ -869,6 +870,7 @@ function GetExchangeBuildDictionary {
                     "Jun26SU"   = "15.2.1544.41"
                     "Jul26SU"   = "15.2.1544.43"
                     "Aug26SU"   = "15.2.1544.44"
+                    "Sep26SU"   = "15.2.1544.46"
                 })
             "CU15" = (NewCUAndSUObject "15.2.1748.10" @{
                     "Apr25HU" = "15.2.1748.24"
@@ -881,6 +883,7 @@ function GetExchangeBuildDictionary {
                     "Jun26SU" = "15.2.1748.46"
                     "Jul26SU" = "15.2.1748.48"
                     "Aug26SU" = "15.2.1748.49"
+                    "Sep26SU" = "15.2.1748.51"
                 })
         }
         "ExchangeSE"   = @{
@@ -894,6 +897,7 @@ function GetExchangeBuildDictionary {
                     "Jun26SU" = "15.2.2562.43"
                     "Jul26SU" = "15.2.2562.45"
                     "Aug26SU" = "15.2.2562.46"
+                    "Sep26SU" = "15.2.2562.49"
                 })
         }
     }