CVE-2026-12246

highpriority · track · 32EPSS 0.004 · 38 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.44% (38th) EPSS

CVSS 8.1 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.1–8.1

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.2

v4.07.2highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.07.2highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · sep@nlnetlabs.nl

v4.05.1mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USCWE-20US

affected products (4)

Products and version ranges known to be affected.

OpenBSD OpenBSD 7.8all versionscert_bundDEcpe:/a:openbsd:openbsd:7.8
OpenBSD OpenBSD 7.9all versionscert_bundDEcpe:/a:openbsd:openbsd:7.9
NLnet Labs NSD4.14.0 → 4.14.3enisa_euvdEU
nlnetlabs nsd4.14.0 → 4.14.3nvdUScpe:2.3:a:nlnetlabs:nsd:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3663OpenBSD: Mehrere SchwachstellenDeutsch2026-09-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in OpenBSD ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen, um Sicherheitsvorkehrungen zu umgehen und um einen Denial of Service Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2026-06-25modified 2026-10-25

references (3)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

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