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Untriaged
Permalink CVE-2026-12245
8.7 HIGH
  • CVSS version (CVSS): 4.0
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Attack Requirement (AT): None (N)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Vulnerable System Impact Confidentiality (VC): None (N)
  • Vulnerable System Impact Integrity (VI): None (N)
  • Vulnerable System Impact Availability (VA): High (H)
  • Subsequent System Impact Confidentiality (SC): None (N)
  • Subsequent System Impact Integrity (SI): None (N)
  • Subsequent System Impact Availability (SA): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Attack Requirement (MAT): None (N)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Vulnerable System Impact Confidentiality (MVC): None (N)
  • Modified Vulnerable System Impact Integrity (MVI): None (N)
  • Modified Vulnerable System Impact Availability (MVA): High (H)
  • Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
  • Modified Subsequent System Impact Integrity (MSI): Negligible (N)
  • Modified Subsequent System Impact Availability (MSA): Negligible (N)
  • Safety (S): Not Defined (X)
  • Automatable (AU): Not Defined (X)
  • Recovery (R): Not Defined (X)
  • Value Density (V): Not Defined (X)
  • Vulnerability Response Effort (RE): Not Defined (X)
  • Provider Urgency (U): Not Defined (X)
  • Confidentiality Req. (CR): Not Defined (X)
  • Integrity Req. (IR): Not Defined (X)
  • Availability Req. (AR): Not Defined (X)
  • Exploit Maturity (E): Not Defined (X)
created 2 weeks, 6 days ago Activity log
  • Created suggestion 2 weeks, 6 days ago
Denial of DNS over TLS service by any DoT client

NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response.

Affected products

NSD
  • <4.14.3

Matching in nixpkgs

pkgs.nsd

Authoritative only, high performance, simple and open source name server

pkgs.dnsdbq

C99 program that accesses passive DNS database systems

pkgs.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

pkgs.dnsdiag

DNS Measurement, Troubleshooting and Security Auditing Toolset

pkgs.adidnsdump

Active Directory Integrated DNS dumping by any authenticated user

pkgs.perlPackages.nsdiff

Create a "nsupdate" script from DNS zone file differences

  • nixos-unstable 1.85
    • nixpkgs-unstable 1.85
    • nixos-unstable-small 1.85
  • nixos-26.05 1.85
    • nixos-26.05-small 1.85
    • nixpkgs-26.05-darwin 1.85

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