1. Home
  2. CVE Database
  3. CVE-2026-12246
HIGH · 8.1

CVE-2026-12246

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 m...

Vulnerability Description

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.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
NlnetlabsNsd>= 4.14.0, < 4.14.3

Related Weaknesses (CWE)

CWE-120CWE-20

References

FAQ

What is CVE-2026-12246?

CVE-2026-12246 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 m...

How severe is CVE-2026-12246?

CVE-2026-12246 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-12246?

Check the references section above for vendor advisories and patch information. Affected products include: Nlnetlabs Nsd.