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CVE-2026-12244: CWE-190: Integer Overflow or Wraparound in NLnet Labs NSDCVE-2026-12244 0 CVE-2026-12244 is a high-severity integer overflow vulnerability in NLnet Labs NSD version 4.14.0. When NSD is configured as a secondary server for a DNS zone, a malicious primary server can send an AXFR response containing a specially crafted SVCB resource record with an rdata size of 65512. This triggers an integer overflow in a 16-bit unsigned variable used for memory allocation, leading to a heap overflow. The vulnerability allows an attacker to perform a controlled remote code execution by overwriting up to 65509 bytes of memory. Join the discussion | CVE Database V5 | 06/25/2026, 05:24:08 UTC Added: 06/25/2026, 06:46:04 UTC |
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