# Important Photon OS Security Update

## Summary
  
Advisory Id     : PHSA-2026-5.0-91-0778
  
Type            : Security
  
Severity        : ['Important']
  
Issue date      : 2026-02-26
  
Affected Release: 5.0-91

## Details
  
Updates of ['dotnet-runtime'] packages of Photon OS have been released.
## Affected Packages

### Important
  
dotnet-runtime - ['[CVE-2026-21218](https://nvd.nist.gov/vuln/detail/CVE-2026-21218)', '[CVE-2025-55247](https://nvd.nist.gov/vuln/detail/CVE-2025-55247)']

## Solution
  
Update the affected packages (tdnf update package)

## Updated Packages Information
  
dotnet-runtime-8.0.24-1.ph5.x86_64.rpm | size : 25M , sha256 : f20b5eef3542c4855d1bea495e64468983168a8191127d6c2ac0e27848c60f7e , build time : Thu, 26 Feb 2026 17:55:45 UTC