CVE-2026-12246CWE-120CWE-20

Out of bounds stack write with crafted APL RR

High · published June 25, 2026

CVSS v4.0
7.2
EPSS
0%
Percentile
37.5
In the wild
Unconfirmed
What it is

NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes.

The record
Technical detail
CVSS v4.0
7.2 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00444 · 37.5th percentile
Weaknesses
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'); CWE-20 · Improper Input Validation
Published
2026-06-25T05:24Z
EPSS history
Timeline
  • 25 JUN 05:24Z
    Out of bounds stack write with crafted APL RR
    cvelistv5