CVE-2026-12246
8.1
HIGH
CVSS 3.1
EPSS 0.27%
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.
How to fix CVE-2026-12246
To remediate CVE-2026-12246, upgrade the affected package to a fixed version below.
- Alpine/nsd—upgrade to 4.14.3-r0 or later
Is CVE-2026-12246 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 4.14.0, < 4.14.3-r0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |