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Vulnerability DatabaseCVE-2026-27854

CVE-2026-27854: 
NixOS vulnerability analysis and mitigation

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.

Source: NVD

Related NixOS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-21010HIGH7.8
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21012MEDIUM6.8
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21011MEDIUM5.4
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21008MEDIUM5.1
  • NixOSNixOS
  • android
NoNoApr 13, 2026
CVE-2026-21007MEDIUM4.4
  • NixOSNixOS
  • android
NoNoApr 13, 2026

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